diff --git a/services/backend/package.json b/services/backend/package.json
index 2626568f..48dd68e8 100644
--- a/services/backend/package.json
+++ b/services/backend/package.json
@@ -26,7 +26,7 @@
     "pino": "^10.3.1",
     "prom-client": "^15.1.3",
     "ws": "^8.21.3",
-    "zod": "^4.5.2"
+    "zod": "^4.5.4"
   },
   "devDependencies": {
     "@biomejs/biome": "latest",
diff --git a/services/backend/pnpm-lock.yaml b/services/backend/pnpm-lock.yaml
index aa8a2aed..89d1223f 100644
--- a/services/backend/pnpm-lock.yaml
+++ b/services/backend/pnpm-lock.yaml
@@ -45,8 +45,8 @@ importers:
         specifier: ^8.21.3
         version: 8.21.3
       zod:
-        specifier: ^4.5.2
-        version: 4.5.2
+        specifier: ^4.5.4
+        version: 4.5.4
     devDependencies:
       '@biomejs/biome':
         specifier: latest
@@ -1639,8 +1639,8 @@ packages:
     resolution: {integrity: sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==}
     engines: {node: '>=0.4'}
 
-  zod@4.5.2:
-    resolution: {integrity: sha512-XkYXCol10+ba/6F/cueWV+TezUeOqXW0hdeJt5CdXjTYeAgAQg5N03RQdJ80mhfFE72+pblvYMW4wy2Qp4Qbrg==}
+  zod@4.5.4:
+    resolution: {integrity: sha512-sC95tT5iHHH9gtpj6A81kh+NEaRAUFN+qlUPDUbRfOMvNf5QCBqsb3WgvnpVtK5Y+4UfA6KqufotuTvMGiTlsA==}
 
 snapshots:
 
@@ -2931,4 +2931,4 @@ snapshots:
 
   xtend@4.0.2: {}
 
-  zod@4.5.2: {}
+  zod@4.5.4: {}