diff --git a/apps/client/package.json b/apps/client/package.json
index da0cef2f85..13193d7d9f 100644
--- a/apps/client/package.json
+++ b/apps/client/package.json
@@ -68,7 +68,7 @@
     "normalize.css": "8.0.1",
     "panzoom": "9.4.3",
     "preact": "10.29.0",
-    "react-i18next": "16.6.2",
+    "react-i18next": "16.6.6",
     "react-window": "2.2.7",
     "reveal.js": "6.0.0",
     "rrule": "2.8.1",
diff --git a/apps/website/package.json b/apps/website/package.json
index be2f425461..63e86d37e5 100644
--- a/apps/website/package.json
+++ b/apps/website/package.json
@@ -14,7 +14,7 @@
 		"preact": "10.29.0",
 		"preact-iso": "2.11.1",
 		"preact-render-to-string": "6.6.6",
-		"react-i18next": "16.6.2"
+		"react-i18next": "16.6.6"
 	},
 	"devDependencies": {
 		"@preact/preset-vite": "2.10.5",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 083d2189b6..4707d29e12 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -342,8 +342,8 @@ importers:
         specifier: 10.29.0
         version: 10.29.0
       react-i18next:
-        specifier: 16.6.2
-        version: 16.6.2(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3)
+        specifier: 16.6.6
+        version: 16.6.6(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3)
       react-window:
         specifier: 2.2.7
         version: 2.2.7(react-dom@19.2.4(react@19.2.4))(react@19.2.4)
@@ -885,8 +885,8 @@ importers:
         specifier: 6.6.6
         version: 6.6.6(preact@10.29.0)
       react-i18next:
-        specifier: 16.6.2
-        version: 16.6.2(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3)
+        specifier: 16.6.6
+        version: 16.6.6(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3)
     devDependencies:
       '@preact/preset-vite':
         specifier: 2.10.5
@@ -13291,14 +13291,14 @@ packages:
     peerDependencies:
       react: ^19.2.4
 
-  react-i18next@16.6.2:
-    resolution: {integrity: sha512-/S/GPzElTqEi5o2kzd0/O2627hPDmE6OGhJCCwCfUaQ3syyu+kaYH8/PYFtZeWc25NzfxTN/2fD1QjvrTgrFfA==}
+  react-i18next@16.6.6:
+    resolution: {integrity: sha512-ZgL2HUoW34UKUkOV7uSQFE1CDnRPD+tCR3ywSuWH7u2iapnz86U8Bi3Vrs620qNDzCf1F47NxglCEkchCTDOHw==}
     peerDependencies:
-      i18next: '>= 25.6.2'
+      i18next: '>= 25.10.9'
       react: '>= 16.8.0'
       react-dom: '*'
       react-native: '*'
-      typescript: ^5
+      typescript: ^5 || ^6
     peerDependenciesMeta:
       react-dom:
         optional: true
@@ -16925,8 +16925,6 @@ snapshots:
       '@ckeditor/ckeditor5-core': 47.6.1
       '@ckeditor/ckeditor5-utils': 47.6.1
       ckeditor5: 47.6.1
-    transitivePeerDependencies:
-      - supports-color
 
   '@ckeditor/ckeditor5-code-block@47.6.1(patch_hash=2361d8caad7d6b5bddacc3a3b4aa37dbfba260b1c1b22a450413a79c1bb1ce95)':
     dependencies:
@@ -17164,6 +17162,8 @@ snapshots:
       '@ckeditor/ckeditor5-table': 47.6.1
       '@ckeditor/ckeditor5-utils': 47.6.1
       ckeditor5: 47.6.1
+    transitivePeerDependencies:
+      - supports-color
 
   '@ckeditor/ckeditor5-emoji@47.6.1':
     dependencies:
@@ -17189,8 +17189,6 @@ snapshots:
       '@ckeditor/ckeditor5-core': 47.6.1
       '@ckeditor/ckeditor5-engine': 47.6.1
       '@ckeditor/ckeditor5-utils': 47.6.1
-    transitivePeerDependencies:
-      - supports-color
 
   '@ckeditor/ckeditor5-essentials@47.6.1':
     dependencies:
@@ -17650,8 +17648,6 @@ snapshots:
       '@ckeditor/ckeditor5-ui': 47.6.1
       '@ckeditor/ckeditor5-utils': 47.6.1
       ckeditor5: 47.6.1
-    transitivePeerDependencies:
-      - supports-color
 
   '@ckeditor/ckeditor5-restricted-editing@47.6.1':
     dependencies:
@@ -31707,7 +31703,7 @@ snapshots:
       react: 19.2.4
       scheduler: 0.27.0
 
-  react-i18next@16.6.2(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3):
+  react-i18next@16.6.6(i18next@25.10.5(typescript@5.9.3))(react-dom@19.2.4(react@19.2.4))(react@19.2.4)(typescript@5.9.3):
     dependencies:
       '@babel/runtime': 7.29.2
       html-parse-stringify: 3.0.1