diff --git a/docker-apps/rest-passthrough/package.json b/docker-apps/rest-passthrough/package.json
index 66159a38a..784767275 100644
--- a/docker-apps/rest-passthrough/package.json
+++ b/docker-apps/rest-passthrough/package.json
@@ -15,7 +15,7 @@
     "@fastify/env": "^5.0.2",
     "@fastify/helmet": "^13.0.1",
     "@fastify/multipart": "^9.0.3",
-    "fastify": "^5.4.0"
+    "fastify": "^5.5.0"
   },
   "devDependencies": {
     "@favware/cliff-jumper": "^6.0.0",
diff --git a/docker-apps/rest-passthrough/yarn.lock b/docker-apps/rest-passthrough/yarn.lock
index 916671290..a3572d699 100644
--- a/docker-apps/rest-passthrough/yarn.lock
+++ b/docker-apps/rest-passthrough/yarn.lock
@@ -1326,9 +1326,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fastify@npm:^5.4.0":
-  version: 5.4.0
-  resolution: "fastify@npm:5.4.0"
+"fastify@npm:^5.5.0":
+  version: 5.5.0
+  resolution: "fastify@npm:5.5.0"
   dependencies:
     "@fastify/ajv-compiler": "npm:^4.0.0"
     "@fastify/error": "npm:^4.0.0"
@@ -1345,7 +1345,7 @@ __metadata:
     secure-json-parse: "npm:^4.0.0"
     semver: "npm:^7.6.0"
     toad-cache: "npm:^3.7.0"
-  checksum: 10c0/2508cbf354fb410a6b85408897296882cd34ca8049dc880e733fd5759ed446d3b9ef0036e0cfe8260c887ae3bbcdda4f02a5d88ed0e991703c5e0beee7ad86a3
+  checksum: 10c0/d7def1f65ebaf6cc47c439c5bd6e933fef1250942e169b842feaf7716f602f4504954bf1715d8f61d2f3f2e8d76e825ee90c6e3f26fcef80a758fbb8a1ed712c
   languageName: node
   linkType: hard
 
@@ -2096,7 +2096,7 @@ __metadata:
     "@swc/cli": "npm:^0.7.8"
     "@swc/core": "npm:^1.13.3"
     dotenv: "npm:^17.2.1"
-    fastify: "npm:^5.4.0"
+    fastify: "npm:^5.5.0"
   languageName: unknown
   linkType: soft