diff --git a/frontend/package.json b/frontend/package.json
index 9a9fccde5..0bb3c409a 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -50,7 +50,7 @@
     "@types/react": "19.2.14",
     "@types/react-dom": "19.2.3",
     "i18next-browser-languagedetector": "8.2.1",
-    "i18next-http-backend": "3.0.5",
+    "i18next-http-backend": "4.0.0",
     "npm-check-updates": "22.2.9",
     "oxfmt": "0.61.0",
     "postcss": "8.5.23",
diff --git a/frontend/pnpm-lock.yaml b/frontend/pnpm-lock.yaml
index 9b92d09b2..ecc7f20ac 100644
--- a/frontend/pnpm-lock.yaml
+++ b/frontend/pnpm-lock.yaml
@@ -106,8 +106,8 @@ importers:
         specifier: 8.2.1
         version: 8.2.1
       i18next-http-backend:
-        specifier: 3.0.5
-        version: 3.0.5
+        specifier: 4.0.0
+        version: 4.0.0
       npm-check-updates:
         specifier: 22.2.9
         version: 22.2.9
@@ -740,9 +740,6 @@ packages:
     resolution: {integrity: sha512-AdmX6xUzdNASswsFtmwSt7Vj8po9IuqXm0UXz7QKPuEUmPB4XyjGfaAr2PSuELMwkRMVH1EpIkX5bTZGRB3eCA==}
     engines: {node: '>=10'}
 
-  cross-fetch@4.1.0:
-    resolution: {integrity: sha512-uKm5PU+MHTootlWEY+mZ4vvXoCn4fLQxT9dSc1sXVMSFkINTJVN8cAQROpwcKm8bJ/c7rgZVIBWzH5T78sNZZw==}
-
   cross-spawn@7.0.6:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
@@ -941,8 +938,9 @@ packages:
   i18next-browser-languagedetector@8.2.1:
     resolution: {integrity: sha512-bZg8+4bdmaOiApD7N7BPT9W8MLZG+nPTOFlLiJiT8uzKXFjhxw4v2ierCXOwB5sFDMtuA5G4kgYZ0AznZxQ/cw==}
 
-  i18next-http-backend@3.0.5:
-    resolution: {integrity: sha512-QaWHnsxieEDcqKe+vo/RFqpiIFRi/KBqlOSPcUlvinBaISCeiTRCbtrazHAjtHtsLC66oDsROAH8frWkQzfMMQ==}
+  i18next-http-backend@4.0.0:
+    resolution: {integrity: sha512-EgSjO3Q1G6f2Q5oy7u9mmxuesE0oSfzAD97NFBjC8EmkK4guBSYLljM0Fng3DarMWIIkU70jfo4+mUzmyVISTA==}
+    engines: {node: '>=18'}
 
   i18next@26.3.4:
     resolution: {integrity: sha512-pa7m0d7pBDqGHZxljT+WPFeyFgQ7P7SciPPo1tTqYuO0z4sqADYhwnBESmmGp/wEof1inwdls/k8ZgTg8rxFHA==}
@@ -1123,15 +1121,6 @@ packages:
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
 
-  node-fetch@2.7.0:
-    resolution: {integrity: sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==}
-    engines: {node: 4.x || >=6.0.0}
-    peerDependencies:
-      encoding: ^0.1.0
-    peerDependenciesMeta:
-      encoding:
-        optional: true
-
   npm-check-updates@22.2.9:
     resolution: {integrity: sha512-DVeZ0KirHfliSsHuR2o7cHE+tW439sVHfJjF6cGWeDiY0Wyl3BI/jS4zV0eixtcMOquFbcF1Su/FsxOvk5MoYA==}
     engines: {node: ^20.19.0 || ^22.12.0 || >=24.0.0, npm: '>=10.0.0'}
@@ -1499,9 +1488,6 @@ packages:
     resolution: {integrity: sha512-Pugqs6M0m7Lv1I7FtxN4aoyToKg1C4tu+/381vH35y8oENM/Ai7f7C4StcoK4/+BSw9ebcS8jRiVrORFKCALLw==}
     engines: {node: ^20.0.0 || >=22.0.0}
 
-  tr46@0.0.3:
-    resolution: {integrity: sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==}
-
   tsconfck@3.1.6:
     resolution: {integrity: sha512-ks6Vjr/jEw0P1gmOVwutM3B7fWxoWBL2KRDb1JfqGVawBmO5UsvmWOQFGHBPl5yxYz4eERr19E6L7NMv+Fej4w==}
     engines: {node: ^18 || >=20}
@@ -1635,12 +1621,6 @@ packages:
     resolution: {integrity: sha512-Dhxzh5HZuiHQhbvTW9AMetFfBHDMYpo23Uo9btPXgdYP+3T5S+p+jgNy7spra+veYhBP2dCSgxR/i2Y02h5/6w==}
     engines: {node: '>=0.10.0'}
 
-  webidl-conversions@3.0.1:
-    resolution: {integrity: sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==}
-
-  whatwg-url@5.0.0:
-    resolution: {integrity: sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==}
-
   which@2.0.2:
     resolution: {integrity: sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==}
     engines: {node: '>= 8'}
@@ -2228,12 +2208,6 @@ snapshots:
       path-type: 4.0.0
       yaml: 1.10.3
 
-  cross-fetch@4.1.0:
-    dependencies:
-      node-fetch: 2.7.0
-    transitivePeerDependencies:
-      - encoding
-
   cross-spawn@7.0.6:
     dependencies:
       path-key: 3.1.1
@@ -2411,11 +2385,7 @@ snapshots:
     dependencies:
       '@babel/runtime': 7.29.7
 
-  i18next-http-backend@3.0.5:
-    dependencies:
-      cross-fetch: 4.1.0
-    transitivePeerDependencies:
-      - encoding
+  i18next-http-backend@4.0.0: {}
 
   i18next@26.3.4(typescript@5.9.3):
     optionalDependencies:
@@ -2540,10 +2510,6 @@ snapshots:
 
   nanoid@3.3.18: {}
 
-  node-fetch@2.7.0:
-    dependencies:
-      whatwg-url: 5.0.0
-
   npm-check-updates@22.2.9: {}
 
   nuqs@2.9.0(react-router@8.3.0(react-dom@19.2.0(react@19.2.0))(react@19.2.0))(react@19.2.0):
@@ -2895,8 +2861,6 @@ snapshots:
 
   tinypool@2.1.0: {}
 
-  tr46@0.0.3: {}
-
   tsconfck@3.1.6(typescript@5.9.3):
     optionalDependencies:
       typescript: 5.9.3
@@ -2974,13 +2938,6 @@ snapshots:
 
   void-elements@3.1.0: {}
 
-  webidl-conversions@3.0.1: {}
-
-  whatwg-url@5.0.0:
-    dependencies:
-      tr46: 0.0.3
-      webidl-conversions: 3.0.1
-
   which@2.0.2:
     dependencies:
       isexe: 2.0.0