diff --git a/CHANGELOG.md b/CHANGELOG.md
index c76baf24..7ff7947b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to
 - ⬆️(frontend) upgrade i18next-resources-to-backend from 1.2.1 to 1.2.3
 - ⬆️(frontend) upgrade @tanstack/react-query from 5.101.1 to 5.101.4
 - ⬆️(frontend) upgrade @pandacss/preset-panda from 1.11.3 to 1.12.0
+- ⬆️(frontend) upgrade posthog-js from 1.404.1 to 1.409.5
 
 ## [1.28.0] - 2026-08-24
 
diff --git a/src/frontend/package-lock.json b/src/frontend/package-lock.json
index e5bd4a20..df06c064 100644
--- a/src/frontend/package-lock.json
+++ b/src/frontend/package-lock.json
@@ -29,7 +29,7 @@
         "i18next-parser": "9.4.0",
         "i18next-resources-to-backend": "1.2.3",
         "livekit-client": "2.21.0",
-        "posthog-js": "1.404.1",
+        "posthog-js": "1.409.5",
         "react": "18.3.1",
         "react-aria": "3.50.0",
         "react-aria-components": "1.19.0",
@@ -1719,6 +1719,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@posthog/browser-common": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/@posthog/browser-common/-/browser-common-0.3.1.tgz",
+      "integrity": "sha512-1nhMVY1wnHADTg8tR9yvm+lPAz5ROxznfQlBtLzB2FFo4lp/LU8lk9KyFPsARDkBxCfYachsJfvRjocL1G/AJQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@posthog/core": "^1.46.0",
+        "@posthog/types": "^1.399.0"
+      }
+    },
     "node_modules/@posthog/core": {
       "version": "1.48.3",
       "resolved": "https://registry.npmjs.org/@posthog/core/-/core-1.48.3.tgz",
@@ -9124,13 +9134,14 @@
       "license": "MIT"
     },
     "node_modules/posthog-js": {
-      "version": "1.404.1",
-      "resolved": "https://registry.npmjs.org/posthog-js/-/posthog-js-1.404.1.tgz",
-      "integrity": "sha512-ck/HOMKuZ6yefUk5OX+h2s9mUWBsnu0mGDUAWjIwAmQQrloZPShzOhOWuEuZQuMnCKORBFRVGsBAuzsl66cBJA==",
+      "version": "1.409.5",
+      "resolved": "https://registry.npmjs.org/posthog-js/-/posthog-js-1.409.5.tgz",
+      "integrity": "sha512-s1iJz+vq0YAluUD4OwLjUFIJt/9pqiiB6MITvHWIS16a7pqTJqbSLXsd5/8kJcIgfrOSZHe+mdYAXLYcJCS4LQ==",
       "license": "(Apache-2.0 AND MIT)",
       "dependencies": {
-        "@posthog/core": "^1.43.1",
-        "@posthog/types": "^1.397.0",
+        "@posthog/browser-common": "^0.3.1",
+        "@posthog/core": "^1.46.1",
+        "@posthog/types": "^1.399.0",
         "core-js": "^3.49.0",
         "dompurify": "^3.3.2",
         "fflate": "^0.4.8",
diff --git a/src/frontend/package.json b/src/frontend/package.json
index 44749d14..6e1192ba 100644
--- a/src/frontend/package.json
+++ b/src/frontend/package.json
@@ -36,7 +36,7 @@
     "i18next-parser": "9.4.0",
     "i18next-resources-to-backend": "1.2.3",
     "livekit-client": "2.21.0",
-    "posthog-js": "1.404.1",
+    "posthog-js": "1.409.5",
     "react": "18.3.1",
     "react-aria": "3.50.0",
     "react-aria-components": "1.19.0",