diff --git a/bundlesize.config.json b/bundlesize.config.json
index afd98b07e4..77ad91a82e 100644
--- a/bundlesize.config.json
+++ b/bundlesize.config.json
@@ -30,7 +30,7 @@
     },
     {
       "path": "packages/vue-instantsearch/vue3/umd/index.js",
-      "maxSize": "69.50 kB"
+      "maxSize": "69.75 kB"
     },
     {
       "path": "packages/vue-instantsearch/vue2/cjs/index.js",
diff --git a/examples/js/algolia-experiences/package.json b/examples/js/algolia-experiences/package.json
index 30eaf01411..7ea9fde032 100644
--- a/examples/js/algolia-experiences/package.json
+++ b/examples/js/algolia-experiences/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-algolia-experiences",
-  "version": "1.19.0",
+  "version": "1.20.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel *.html",
@@ -9,7 +9,7 @@
   },
   "browserslist": "firefox 68, chrome 78, IE 11",
   "dependencies": {
-    "algolia-experiences": "1.5.10",
+    "algolia-experiences": "1.5.11",
     "instantsearch.css": "8.5.1"
   },
   "devDependencies": {
diff --git a/examples/js/calendar-widget/package.json b/examples/js/calendar-widget/package.json
index 51d70d8157..fffc97d31c 100644
--- a/examples/js/calendar-widget/package.json
+++ b/examples/js/calendar-widget/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-calendar-widget",
-  "version": "1.34.0",
+  "version": "1.35.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html --port 3000",
@@ -10,7 +10,7 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/js/e-commerce-umd/package.json b/examples/js/e-commerce-umd/package.json
index 5184f3979a..07d5addbd3 100644
--- a/examples/js/e-commerce-umd/package.json
+++ b/examples/js/e-commerce-umd/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-ecommerce-umd",
-  "version": "1.64.0",
+  "version": "1.65.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html --port 3000",
@@ -11,7 +11,7 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/js/e-commerce/package.json b/examples/js/e-commerce/package.json
index 5a069ed142..21e2b1b78b 100644
--- a/examples/js/e-commerce/package.json
+++ b/examples/js/e-commerce/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-ecommerce",
-  "version": "1.76.0",
+  "version": "1.77.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html --port 3000",
@@ -11,7 +11,7 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/js/getting-started/package.json b/examples/js/getting-started/package.json
index 5e814bbdd7..2af9dd4455 100644
--- a/examples/js/getting-started/package.json
+++ b/examples/js/getting-started/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-getting-started",
-  "version": "1.34.0",
+  "version": "1.35.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html products.html --port 3000",
@@ -11,7 +11,7 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/js/media/package.json b/examples/js/media/package.json
index 94d1cab596..64c2fadd1d 100644
--- a/examples/js/media/package.json
+++ b/examples/js/media/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-media",
-  "version": "1.77.0",
+  "version": "1.78.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html --port 3000",
@@ -12,7 +12,7 @@
     "date-fns": "2.25.0",
     "htm": "^3.0.0",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/js/tourism/package.json b/examples/js/tourism/package.json
index 23b55b68ea..73f4a6a4c2 100644
--- a/examples/js/tourism/package.json
+++ b/examples/js/tourism/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-instantsearch-tourism",
-  "version": "1.34.0",
+  "version": "1.35.0",
   "private": true,
   "scripts": {
     "start": "BABEL_ENV=parcel parcel index.html --port 3000",
@@ -10,7 +10,7 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
     "@babel/core": "7.15.5",
diff --git a/examples/react/default-theme/package.json b/examples/react/default-theme/package.json
index cb17008bc0..2e23334a45 100644
--- a/examples/react/default-theme/package.json
+++ b/examples/react/default-theme/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-default-theme",
-  "version": "61.0.0",
+  "version": "62.0.0",
   "private": true,
   "scripts": {
     "build": "BABEL_ENV=parcel parcel build index.html",
@@ -9,10 +9,10 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6"
+    "react-instantsearch": "7.15.7"
   },
   "devDependencies": {
     "@parcel/core": "2.10.0",
diff --git a/examples/react/e-commerce/package.json b/examples/react/e-commerce/package.json
index 9c728a91a8..30b0524edf 100644
--- a/examples/react/e-commerce/package.json
+++ b/examples/react/e-commerce/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-e-commerce",
-  "version": "61.0.0",
+  "version": "62.0.0",
   "private": true,
   "scripts": {
     "build": "BABEL_ENV=parcel parcel build index.html",
@@ -11,11 +11,11 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "react": "19.0.0",
     "react-compound-slider": "3.4.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6"
+    "react-instantsearch": "7.15.7"
   },
   "devDependencies": {
     "@parcel/core": "2.10.0",
diff --git a/examples/react/getting-started/package.json b/examples/react/getting-started/package.json
index c38c88d406..1f878df953 100644
--- a/examples/react/getting-started/package.json
+++ b/examples/react/getting-started/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-getting-started",
-  "version": "6.93.0",
+  "version": "6.94.0",
   "private": true,
   "scripts": {
     "build": "BABEL_ENV=parcel parcel build index.html products.html",
@@ -9,10 +9,10 @@
   "dependencies": {
     "algoliasearch": "5.1.1",
     "instantsearch.css": "8.5.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6"
+    "react-instantsearch": "7.15.7"
   },
   "devDependencies": {
     "@parcel/core": "2.10.0",
diff --git a/examples/react/next-app-router/package.json b/examples/react/next-app-router/package.json
index d313870149..815a880c11 100644
--- a/examples/react/next-app-router/package.json
+++ b/examples/react/next-app-router/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-next-app-dir-example",
-  "version": "8.52.0",
+  "version": "8.53.0",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -14,8 +14,8 @@
     "next": "15.1.4",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6",
-    "react-instantsearch-nextjs": "0.4.7"
+    "react-instantsearch": "7.15.7",
+    "react-instantsearch-nextjs": "0.4.8"
   },
   "devDependencies": {
     "@types/node": "17.0.40",
diff --git a/examples/react/next-routing/package.json b/examples/react/next-routing/package.json
index e57fea2419..376b29eb8f 100644
--- a/examples/react/next-routing/package.json
+++ b/examples/react/next-routing/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-next-routing-example",
-  "version": "6.111.0",
+  "version": "6.112.0",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -14,8 +14,8 @@
     "next": "15.1.4",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6",
-    "react-instantsearch-router-nextjs": "7.15.6"
+    "react-instantsearch": "7.15.7",
+    "react-instantsearch-router-nextjs": "7.15.7"
   },
   "devDependencies": {
     "@types/node": "17.0.40",
diff --git a/examples/react/next/package.json b/examples/react/next/package.json
index e1750d9208..67b85fb195 100644
--- a/examples/react/next/package.json
+++ b/examples/react/next/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-next-example",
-  "version": "60.0.0",
+  "version": "61.0.0",
   "private": true,
   "scripts": {
     "dev": "next dev",
@@ -14,8 +14,8 @@
     "next": "15.1.4",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6",
-    "react-instantsearch-router-nextjs": "7.15.6"
+    "react-instantsearch": "7.15.7",
+    "react-instantsearch-router-nextjs": "7.15.7"
   },
   "devDependencies": {
     "@types/node": "17.0.40",
diff --git a/examples/react/react-native/package.json b/examples/react/react-native/package.json
index 3aab5693f1..310c6a2c4c 100644
--- a/examples/react/react-native/package.json
+++ b/examples/react/react-native/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-react-native-example",
-  "version": "60.0.0",
+  "version": "61.0.0",
   "private": true,
   "main": "node_modules/expo/AppEntry.js",
   "scripts": {
@@ -14,9 +14,9 @@
     "algoliasearch": "5.1.1",
     "expo": "~44.0.0",
     "expo-status-bar": "~1.2.0",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "react": "17.0.1",
-    "react-instantsearch-core": "7.15.6",
+    "react-instantsearch-core": "7.15.7",
     "react-native": "0.64.3",
     "react-native-web": "0.17.1"
   },
diff --git a/examples/react/ssr/package.json b/examples/react/ssr/package.json
index 03ff9c437f..aee307ea19 100644
--- a/examples/react/ssr/package.json
+++ b/examples/react/ssr/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-react-instantsearch-server-side-rendering",
-  "version": "6.91.0",
+  "version": "6.92.0",
   "private": true,
   "license": "MIT",
   "scripts": {
@@ -27,6 +27,6 @@
     "express": "4.17.1",
     "react": "19.0.0",
     "react-dom": "19.0.0",
-    "react-instantsearch": "7.15.6"
+    "react-instantsearch": "7.15.7"
   }
 }
diff --git a/examples/vue/default-theme/package.json b/examples/vue/default-theme/package.json
index d01ce7358d..1e4f8eaf7f 100644
--- a/examples/vue/default-theme/package.json
+++ b/examples/vue/default-theme/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-default-theme",
-  "version": "0.76.0",
+  "version": "0.77.0",
   "private": true,
   "scripts": {
     "dev": "vite",
@@ -10,9 +10,9 @@
   },
   "dependencies": {
     "algoliasearch": "5.1.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "vue": "2.7.14",
-    "vue-instantsearch": "4.20.7"
+    "vue-instantsearch": "4.20.8"
   },
   "devDependencies": {
     "@vitejs/plugin-vue2": "2.3.1",
diff --git a/examples/vue/e-commerce/package.json b/examples/vue/e-commerce/package.json
index 0e9c6435ea..647473008f 100644
--- a/examples/vue/e-commerce/package.json
+++ b/examples/vue/e-commerce/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-e-commerce",
-  "version": "0.76.0",
+  "version": "0.77.0",
   "private": true,
   "scripts": {
     "dev": "vite",
@@ -10,9 +10,9 @@
   },
   "dependencies": {
     "algoliasearch": "5.1.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "vue": "2.7.14",
-    "vue-instantsearch": "4.20.7",
+    "vue-instantsearch": "4.20.8",
     "vue-slider-component": "3.0.32"
   },
   "devDependencies": {
diff --git a/examples/vue/getting-started/package.json b/examples/vue/getting-started/package.json
index 37631443c9..75d3933912 100644
--- a/examples/vue/getting-started/package.json
+++ b/examples/vue/getting-started/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-getting-started",
-  "version": "1.33.0",
+  "version": "1.34.0",
   "private": true,
   "scripts": {
     "dev": "vite",
@@ -9,9 +9,9 @@
   },
   "dependencies": {
     "algoliasearch": "5.1.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "vue": "2.7.14",
-    "vue-instantsearch": "4.20.7"
+    "vue-instantsearch": "4.20.8"
   },
   "devDependencies": {
     "@vitejs/plugin-vue2": "2.3.1",
diff --git a/examples/vue/media/package.json b/examples/vue/media/package.json
index bee42e9066..fb5da8ff96 100644
--- a/examples/vue/media/package.json
+++ b/examples/vue/media/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-media",
-  "version": "0.76.0",
+  "version": "0.77.0",
   "private": true,
   "scripts": {
     "dev": "vite",
@@ -10,9 +10,9 @@
   },
   "dependencies": {
     "algoliasearch": "5.1.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "vue": "2.7.14",
-    "vue-instantsearch": "4.20.7"
+    "vue-instantsearch": "4.20.8"
   },
   "devDependencies": {
     "@vitejs/plugin-vue2": "2.3.1",
diff --git a/examples/vue/nuxt/package.json b/examples/vue/nuxt/package.json
index 9169341be9..19110bde69 100644
--- a/examples/vue/nuxt/package.json
+++ b/examples/vue/nuxt/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-nuxt",
-  "version": "1.75.0",
+  "version": "1.76.0",
   "description": "Vue InstantSearch & Nuxt",
   "private": true,
   "scripts": {
@@ -15,7 +15,7 @@
     "cross-env": "^5.2.0",
     "css-loader": "^4.3.0",
     "nuxt": "^2.4.5",
-    "vue-instantsearch": "4.20.7",
+    "vue-instantsearch": "4.20.8",
     "vue-server-renderer": "2.7.14"
   }
 }
diff --git a/examples/vue/ssr/package.json b/examples/vue/ssr/package.json
index dca7b6f81c..cd06654045 100644
--- a/examples/vue/ssr/package.json
+++ b/examples/vue/ssr/package.json
@@ -1,6 +1,6 @@
 {
   "name": "example-vue-instantsearch-ssr",
-  "version": "0.76.0",
+  "version": "0.77.0",
   "private": true,
   "scripts": {
     "build": "NODE_OPTIONS=--openssl-legacy-provider vue-cli-service ssr:build",
@@ -12,7 +12,7 @@
     "instantsearch.css": "8.5.1",
     "qs": "6.9.7",
     "vue": "2.7.14",
-    "vue-instantsearch": "4.20.7",
+    "vue-instantsearch": "4.20.8",
     "vue-router": "^3.0.2",
     "vue-server-renderer": "2.7.14"
   },
diff --git a/packages/algolia-experiences/CHANGELOG.md b/packages/algolia-experiences/CHANGELOG.md
index 857348dfb0..cb47995499 100644
--- a/packages/algolia-experiences/CHANGELOG.md
+++ b/packages/algolia-experiences/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [1.5.11](https://github.com/algolia/instantsearch/compare/algolia-experiences@1.5.10...algolia-experiences@1.5.11) (2025-05-06)
+
+**Note:** Version bump only for package algolia-experiences
+
+
+
+
+
 ## [1.5.10](https://github.com/algolia/instantsearch/compare/algolia-experiences@1.5.9...algolia-experiences@1.5.10) (2025-04-29)
 
 **Note:** Version bump only for package algolia-experiences
diff --git a/packages/algolia-experiences/package.json b/packages/algolia-experiences/package.json
index 5cd0ce8137..1a752b334e 100644
--- a/packages/algolia-experiences/package.json
+++ b/packages/algolia-experiences/package.json
@@ -1,7 +1,7 @@
 {
   "name": "algolia-experiences",
   "license": "MIT",
-  "version": "1.5.10",
+  "version": "1.5.11",
   "main": "src/index.ts",
   "jsdelivr": "dist/algolia-experiences.production.min.js",
   "unpkg": "dist/algolia-experiences.production.min.js",
@@ -10,10 +10,10 @@
   ],
   "dependencies": {
     "algoliasearch": "5.1.1",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   },
   "devDependencies": {
-    "@instantsearch/testutils": "1.62.0"
+    "@instantsearch/testutils": "1.63.0"
   },
   "scripts": {
     "build": "rollup -c rollup.config.js"
diff --git a/packages/create-instantsearch-app/package.json b/packages/create-instantsearch-app/package.json
index 36ed74458b..5f9ea1631b 100644
--- a/packages/create-instantsearch-app/package.json
+++ b/packages/create-instantsearch-app/package.json
@@ -49,7 +49,7 @@
     "validate-npm-package-name": "3.0.0"
   },
   "devDependencies": {
-    "@instantsearch/testutils": "1.62.0",
+    "@instantsearch/testutils": "1.63.0",
     "jest-image-snapshot": "2.12.0",
     "walk-sync": "2.0.2"
   }
diff --git a/packages/instantsearch.js/CHANGELOG.md b/packages/instantsearch.js/CHANGELOG.md
index 573e59fdd1..1d9e552520 100644
--- a/packages/instantsearch.js/CHANGELOG.md
+++ b/packages/instantsearch.js/CHANGELOG.md
@@ -3,6 +3,17 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [4.78.3](https://github.com/algolia/instantsearch/compare/instantsearch.js@4.78.2...instantsearch.js@4.78.3) (2025-05-06)
+
+
+### Bug Fixes
+
+* **insights:** use latest appId and apiKey ([#6631](https://github.com/algolia/instantsearch/issues/6631)) ([d03d391](https://github.com/algolia/instantsearch/commit/d03d391c088011aee9a2ad290f9531d662c6b905))
+
+
+
+
+
 ## [4.78.2](https://github.com/algolia/instantsearch/compare/instantsearch.js@4.78.1...instantsearch.js@4.78.2) (2025-04-29)
 
 **Note:** Version bump only for package instantsearch.js
diff --git a/packages/instantsearch.js/package.json b/packages/instantsearch.js/package.json
index 8b2313c25e..360aa8dabd 100644
--- a/packages/instantsearch.js/package.json
+++ b/packages/instantsearch.js/package.json
@@ -1,6 +1,6 @@
 {
   "name": "instantsearch.js",
-  "version": "4.78.2",
+  "version": "4.78.3",
   "description": "InstantSearch.js is a JavaScript library for building performant and instant search experiences with Algolia.",
   "homepage": "https://www.algolia.com/doc/guides/building-search-ui/what-is-instantsearch/js/",
   "types": "es/index.d.ts",
@@ -56,9 +56,9 @@
     "watch:es": "yarn --silent build:es:base --watch"
   },
   "devDependencies": {
-    "@instantsearch/mocks": "1.73.0",
-    "@instantsearch/tests": "1.73.0",
-    "@instantsearch/testutils": "1.62.0",
+    "@instantsearch/mocks": "1.74.0",
+    "@instantsearch/tests": "1.74.0",
+    "@instantsearch/testutils": "1.63.0",
     "@storybook/html": "5.3.9",
     "@types/scriptjs": "0.0.2",
     "algoliasearch": "5.1.1",
diff --git a/packages/instantsearch.js/src/lib/version.ts b/packages/instantsearch.js/src/lib/version.ts
index 6179332052..e63e381e35 100644
--- a/packages/instantsearch.js/src/lib/version.ts
+++ b/packages/instantsearch.js/src/lib/version.ts
@@ -1 +1 @@
-export default '4.78.2';
+export default '4.78.3';
diff --git a/packages/instantsearch.js/src/middlewares/__tests__/createInsightsMiddleware.ts b/packages/instantsearch.js/src/middlewares/__tests__/createInsightsMiddleware.ts
index 4b84abc8db..7d217a0f42 100644
--- a/packages/instantsearch.js/src/middlewares/__tests__/createInsightsMiddleware.ts
+++ b/packages/instantsearch.js/src/middlewares/__tests__/createInsightsMiddleware.ts
@@ -38,15 +38,20 @@ declare global {
 }
 
 describe('insights', () => {
-  const searchClientWithCredentials = createSearchClient({
-    // @ts-expect-error only available in search client v4
-    transporter: {
-      headers: {
-        'x-algolia-application-id': 'myAppId',
-        'x-algolia-api-key': 'myApiKey',
+  let searchClientWithCredentials: SearchClient;
+
+  beforeEach(() => {
+    searchClientWithCredentials = createSearchClient({
+      // @ts-expect-error only available in search client v4
+      transporter: {
+        headers: {
+          'x-algolia-application-id': 'myAppId',
+          'x-algolia-api-key': 'myApiKey',
+        },
       },
-    },
+    });
   });
+
   const createTestEnvironment = ({
     searchClient = searchClientWithCredentials,
     started = true,
@@ -1218,6 +1223,76 @@ describe('insights', () => {
       );
     });
 
+    it('uses latest appId and apiKey from client', () => {
+      const { insightsClient, instantSearchInstance, analytics } =
+        createTestEnvironment();
+
+      instantSearchInstance.use(
+        createInsightsMiddleware({
+          insightsClient,
+        })
+      );
+      insightsClient('setUserToken', 'token');
+
+      instantSearchInstance.sendEventToInsights({
+        insightsMethod: 'viewedObjectIDs',
+        widgetType: 'ais.customWidget',
+        eventType: 'view',
+        payload: {
+          index: 'my-index',
+          eventName: 'My Hits Viewed',
+          objectIDs: ['obj1'],
+        },
+      });
+
+      expect(analytics.viewedObjectIDs).toHaveBeenCalledTimes(1);
+      expect(analytics.viewedObjectIDs).toHaveBeenCalledWith(
+        {
+          index: 'my-index',
+          eventName: 'My Hits Viewed',
+          objectIDs: ['obj1'],
+          algoliaSource: ['instantsearch'],
+        },
+        {
+          headers: {
+            'X-Algolia-Application-Id': 'myAppId',
+            'X-Algolia-API-Key': 'myApiKey',
+          },
+        }
+      );
+
+      // @ts-expect-error - only works for v4+
+      instantSearchInstance.client.transporter.headers['x-algolia-api-key'] =
+        'myApiKey2';
+
+      instantSearchInstance.sendEventToInsights({
+        insightsMethod: 'viewedObjectIDs',
+        widgetType: 'ais.customWidget',
+        eventType: 'view',
+        payload: {
+          index: 'my-index',
+          eventName: 'My Hits Viewed',
+          objectIDs: ['obj2'],
+        },
+      });
+
+      expect(analytics.viewedObjectIDs).toHaveBeenCalledTimes(2);
+      expect(analytics.viewedObjectIDs).toHaveBeenCalledWith(
+        {
+          index: 'my-index',
+          eventName: 'My Hits Viewed',
+          objectIDs: ['obj2'],
+          algoliaSource: ['instantsearch'],
+        },
+        {
+          headers: {
+            'X-Algolia-Application-Id': 'myAppId',
+            'X-Algolia-API-Key': 'myApiKey2',
+          },
+        }
+      );
+    });
+
     it('calls onEvent when given', () => {
       const { insightsClient, instantSearchInstance, analytics } =
         createTestEnvironment();
diff --git a/packages/instantsearch.js/src/middlewares/createInsightsMiddleware.ts b/packages/instantsearch.js/src/middlewares/createInsightsMiddleware.ts
index 8e1fb8b634..c896bd03e1 100644
--- a/packages/instantsearch.js/src/middlewares/createInsightsMiddleware.ts
+++ b/packages/instantsearch.js/src/middlewares/createInsightsMiddleware.ts
@@ -332,10 +332,13 @@ export function createInsightsMiddleware<
 
         if (isModernInsightsClient(insightsClient)) {
           insightsClientWithLocalCredentials = (method, payload) => {
+            const [latestAppId, latestApiKey] = getAppIdAndApiKey(
+              instantSearchInstance.client
+            );
             const extraParams = {
               headers: {
-                'X-Algolia-Application-Id': appId,
-                'X-Algolia-API-Key': apiKey,
+                'X-Algolia-Application-Id': latestAppId,
+                'X-Algolia-API-Key': latestApiKey,
               },
             };
 
diff --git a/packages/react-instantsearch-core/CHANGELOG.md b/packages/react-instantsearch-core/CHANGELOG.md
index 865e225a12..12872cb223 100644
--- a/packages/react-instantsearch-core/CHANGELOG.md
+++ b/packages/react-instantsearch-core/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [7.15.7](https://github.com/algolia/instantsearch/compare/react-instantsearch-core@7.15.6...react-instantsearch-core@7.15.7) (2025-05-06)
+
+**Note:** Version bump only for package react-instantsearch-core
+
+
+
+
+
 ## [7.15.6](https://github.com/algolia/instantsearch/compare/react-instantsearch-core@7.15.5...react-instantsearch-core@7.15.6) (2025-04-29)
 
 **Note:** Version bump only for package react-instantsearch-core
diff --git a/packages/react-instantsearch-core/package.json b/packages/react-instantsearch-core/package.json
index c0fa1e29d3..f7de556566 100644
--- a/packages/react-instantsearch-core/package.json
+++ b/packages/react-instantsearch-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-instantsearch-core",
-  "version": "7.15.6",
+  "version": "7.15.7",
   "description": "⚡ Lightning-fast search for React, by Algolia",
   "types": "dist/es/index.d.ts",
   "main": "dist/cjs/index.js",
@@ -50,7 +50,7 @@
   "dependencies": {
     "@babel/runtime": "^7.1.2",
     "algoliasearch-helper": "3.25.0",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "use-sync-external-store": "^1.0.0"
   },
   "devDependencies": {
diff --git a/packages/react-instantsearch-core/src/version.ts b/packages/react-instantsearch-core/src/version.ts
index 53f2da9eb4..63b68516cf 100644
--- a/packages/react-instantsearch-core/src/version.ts
+++ b/packages/react-instantsearch-core/src/version.ts
@@ -1 +1 @@
-export default '7.15.6';
+export default '7.15.7';
diff --git a/packages/react-instantsearch-nextjs/CHANGELOG.md b/packages/react-instantsearch-nextjs/CHANGELOG.md
index 61089d1a7c..a004b88f58 100644
--- a/packages/react-instantsearch-nextjs/CHANGELOG.md
+++ b/packages/react-instantsearch-nextjs/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [0.4.8](https://github.com/algolia/instantsearch/compare/react-instantsearch-nextjs@0.4.7...react-instantsearch-nextjs@0.4.8) (2025-05-06)
+
+**Note:** Version bump only for package react-instantsearch-nextjs
+
+
+
+
+
 ## [0.4.7](https://github.com/algolia/instantsearch/compare/react-instantsearch-nextjs@0.4.6...react-instantsearch-nextjs@0.4.7) (2025-04-29)
 
 **Note:** Version bump only for package react-instantsearch-nextjs
diff --git a/packages/react-instantsearch-nextjs/package.json b/packages/react-instantsearch-nextjs/package.json
index 74313fd705..77a949fe0e 100644
--- a/packages/react-instantsearch-nextjs/package.json
+++ b/packages/react-instantsearch-nextjs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-instantsearch-nextjs",
-  "version": "0.4.7",
+  "version": "0.4.8",
   "description": "React InstantSearch SSR utilities for Next.js",
   "types": "dist/es/index.d.ts",
   "main": "dist/cjs/index.js",
@@ -49,9 +49,9 @@
     "watch:es": "yarn --silent build:es:base --watch"
   },
   "devDependencies": {
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "next": "15.1.4",
-    "react-instantsearch-core": "7.15.6"
+    "react-instantsearch-core": "7.15.7"
   },
   "peerDependencies": {
     "next": ">= 13.4 < 16",
diff --git a/packages/react-instantsearch-router-nextjs/CHANGELOG.md b/packages/react-instantsearch-router-nextjs/CHANGELOG.md
index 419b2f1ce2..13485a6635 100644
--- a/packages/react-instantsearch-router-nextjs/CHANGELOG.md
+++ b/packages/react-instantsearch-router-nextjs/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [7.15.7](https://github.com/algolia/instantsearch/compare/react-instantsearch-router-nextjs@7.15.6...react-instantsearch-router-nextjs@7.15.7) (2025-05-06)
+
+**Note:** Version bump only for package react-instantsearch-router-nextjs
+
+
+
+
+
 ## [7.15.6](https://github.com/algolia/instantsearch/compare/react-instantsearch-router-nextjs@7.15.5...react-instantsearch-router-nextjs@7.15.6) (2025-04-29)
 
 **Note:** Version bump only for package react-instantsearch-router-nextjs
diff --git a/packages/react-instantsearch-router-nextjs/package.json b/packages/react-instantsearch-router-nextjs/package.json
index 001102276d..0b8b27c950 100644
--- a/packages/react-instantsearch-router-nextjs/package.json
+++ b/packages/react-instantsearch-router-nextjs/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-instantsearch-router-nextjs",
-  "version": "7.15.6",
+  "version": "7.15.7",
   "description": "React InstantSearch Router for Next.js",
   "types": "dist/es/index.d.ts",
   "main": "dist/cjs/index.js",
@@ -50,8 +50,8 @@
     "watch:es": "yarn --silent build:es:base --watch"
   },
   "dependencies": {
-    "instantsearch.js": "4.78.2",
-    "react-instantsearch-core": "7.15.6"
+    "instantsearch.js": "4.78.3",
+    "react-instantsearch-core": "7.15.7"
   },
   "devDependencies": {
     "@types/jasmine": "3.3.16",
diff --git a/packages/react-instantsearch/CHANGELOG.md b/packages/react-instantsearch/CHANGELOG.md
index d71faf9b58..e8caef2820 100644
--- a/packages/react-instantsearch/CHANGELOG.md
+++ b/packages/react-instantsearch/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [7.15.7](https://github.com/algolia/instantsearch/compare/react-instantsearch@7.15.6...react-instantsearch@7.15.7) (2025-05-06)
+
+**Note:** Version bump only for package react-instantsearch
+
+
+
+
+
 ## [7.15.6](https://github.com/algolia/instantsearch/compare/react-instantsearch@7.15.5...react-instantsearch@7.15.6) (2025-04-29)
 
 **Note:** Version bump only for package react-instantsearch
diff --git a/packages/react-instantsearch/package.json b/packages/react-instantsearch/package.json
index fc5e60e0b0..45852c22d2 100644
--- a/packages/react-instantsearch/package.json
+++ b/packages/react-instantsearch/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-instantsearch",
-  "version": "7.15.6",
+  "version": "7.15.7",
   "description": "⚡ Lightning-fast search for React, by Algolia",
   "types": "dist/es/index.d.ts",
   "main": "dist/cjs/index.js",
@@ -49,8 +49,8 @@
   "dependencies": {
     "@babel/runtime": "^7.1.2",
     "instantsearch-ui-components": "0.11.1",
-    "instantsearch.js": "4.78.2",
-    "react-instantsearch-core": "7.15.6"
+    "instantsearch.js": "4.78.3",
+    "react-instantsearch-core": "7.15.7"
   },
   "peerDependencies": {
     "algoliasearch": ">= 3.1 < 6",
diff --git a/packages/vue-instantsearch/CHANGELOG.md b/packages/vue-instantsearch/CHANGELOG.md
index 5e95ef78b0..55d3c3b4c6 100644
--- a/packages/vue-instantsearch/CHANGELOG.md
+++ b/packages/vue-instantsearch/CHANGELOG.md
@@ -3,6 +3,14 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## [4.20.8](https://github.com/algolia/instantsearch/compare/vue-instantsearch@4.20.7...vue-instantsearch@4.20.8) (2025-05-06)
+
+**Note:** Version bump only for package vue-instantsearch
+
+
+
+
+
 ## [4.20.7](https://github.com/algolia/instantsearch/compare/vue-instantsearch@4.20.6...vue-instantsearch@4.20.7) (2025-04-29)
 
 **Note:** Version bump only for package vue-instantsearch
diff --git a/packages/vue-instantsearch/package.json b/packages/vue-instantsearch/package.json
index 3f55149ffe..f98f6f4937 100644
--- a/packages/vue-instantsearch/package.json
+++ b/packages/vue-instantsearch/package.json
@@ -16,7 +16,7 @@
     "autocomplete"
   ],
   "license": "MIT",
-  "version": "4.20.7",
+  "version": "4.20.8",
   "files": [
     "vue2",
     "vue3",
@@ -37,7 +37,7 @@
   },
   "dependencies": {
     "instantsearch-ui-components": "0.11.1",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "mitt": "^2.1.0"
   },
   "peerDependencies": {
diff --git a/tests/common/package.json b/tests/common/package.json
index 16679f3f4f..3abdca8a8d 100644
--- a/tests/common/package.json
+++ b/tests/common/package.json
@@ -1,9 +1,9 @@
 {
   "name": "@instantsearch/tests",
   "private": true,
-  "version": "1.73.0",
+  "version": "1.74.0",
   "description": "Common tests for all InstantSearch flavors.",
   "dependencies": {
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   }
 }
diff --git a/tests/mocks/package.json b/tests/mocks/package.json
index c9b30cf8db..53ef543de2 100644
--- a/tests/mocks/package.json
+++ b/tests/mocks/package.json
@@ -1,9 +1,9 @@
 {
   "name": "@instantsearch/mocks",
-  "version": "1.73.0",
+  "version": "1.74.0",
   "private": true,
   "dependencies": {
     "algoliasearch-helper": "3.25.0",
-    "instantsearch.js": "4.78.2"
+    "instantsearch.js": "4.78.3"
   }
 }
diff --git a/tests/utils/package.json b/tests/utils/package.json
index 0e69d76899..d211f3d2d5 100644
--- a/tests/utils/package.json
+++ b/tests/utils/package.json
@@ -1,13 +1,13 @@
 {
   "name": "@instantsearch/testutils",
-  "version": "1.62.0",
+  "version": "1.63.0",
   "private": true,
   "dependencies": {
     "@types/enzyme": "3.1.15",
     "enzyme": "3.11.0",
     "enzyme-adapter-preact-pure": "2.2.0",
     "enzyme-to-json": "3.6.2",
-    "instantsearch.js": "4.78.2",
+    "instantsearch.js": "4.78.3",
     "jest-serializer-html": "7.1.0",
     "preact": "^10.10.0"
   }