diff --git a/apps/collector/package.json b/apps/collector/package.json
index cd324db..4c43715 100644
--- a/apps/collector/package.json
+++ b/apps/collector/package.json
@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@fastify/sensible": "^5.6.0",
-    "fastify": "^4.28.1",
+    "fastify": "^5.8.1",
     "pg": "^8.12.0",
     "zod": "^3.23.8"
   },
diff --git a/apps/policy-engine/package.json b/apps/policy-engine/package.json
index f9cddb1..3e5bde7 100644
--- a/apps/policy-engine/package.json
+++ b/apps/policy-engine/package.json
@@ -11,7 +11,7 @@
     "lint": "tsc -p tsconfig.json --noEmit"
   },
   "dependencies": {
-    "fastify": "^4.28.1",
+    "fastify": "^5.8.1",
     "zod": "^3.23.8"
   },
   "devDependencies": {