diff --git a/.pnp.cjs b/.pnp.cjs
index 7fcccdfb53..851edee15d 100644
--- a/.pnp.cjs
+++ b/.pnp.cjs
@@ -4896,7 +4896,7 @@ const RAW_RUNTIME_STATE =
           ["@types/jest", "npm:29.5.14"],\
           ["@types/node", "npm:22.14.1"],\
           ["axios", "npm:1.13.4"],\
-          ["fastify", "npm:5.6.2"],\
+          ["fastify", "npm:5.7.4"],\
           ["nock", "npm:13.5.6"],\
           ["tslib", "npm:2.8.1"],\
           ["typescript", "patch:typescript@npm%3A5.8.3#optional!builtin<compat/typescript>::version=5.8.3&hash=5786d5"]\
@@ -5738,7 +5738,7 @@ const RAW_RUNTIME_STATE =
           ["axios", "npm:1.13.4"],\
           ["decimal.js", "npm:10.5.0"],\
           ["fast-redact", "npm:3.5.0"],\
-          ["fastify", "npm:5.6.2"],\
+          ["fastify", "npm:5.7.4"],\
           ["lodash", "npm:4.17.23"],\
           ["lru-cache", "npm:6.0.0"],\
           ["mock-socket", "npm:9.3.1"],\
@@ -19244,6 +19244,28 @@ const RAW_RUNTIME_STATE =
           ["toad-cache", "npm:3.7.0"]\
         ],\
         "linkType": "HARD"\
+      }],\
+      ["npm:5.7.4", {\
+        "packageLocation": "./.yarn/cache/fastify-npm-5.7.4-a4afd8cb7e-037fb94fb4.zip/node_modules/fastify/",\
+        "packageDependencies": [\
+          ["fastify", "npm:5.7.4"],\
+          ["@fastify/ajv-compiler", "npm:4.0.5"],\
+          ["@fastify/error", "npm:4.0.0"],\
+          ["@fastify/fast-json-stringify-compiler", "npm:5.0.2"],\
+          ["@fastify/proxy-addr", "npm:5.0.0"],\
+          ["abstract-logging", "npm:2.0.1"],\
+          ["avvio", "npm:9.1.0"],\
+          ["fast-json-stringify", "npm:6.0.0"],\
+          ["find-my-way", "npm:9.1.0"],\
+          ["light-my-request", "npm:6.4.0"],\
+          ["pino", "npm:10.1.0"],\
+          ["process-warning", "npm:5.0.0"],\
+          ["rfdc", "npm:1.4.1"],\
+          ["secure-json-parse", "npm:4.0.0"],\
+          ["semver", "npm:7.7.2"],\
+          ["toad-cache", "npm:3.7.0"]\
+        ],\
+        "linkType": "HARD"\
       }]\
     ]],\
     ["fastq", [\
diff --git a/.yarn/cache/fastify-npm-5.7.4-a4afd8cb7e-037fb94fb4.zip b/.yarn/cache/fastify-npm-5.7.4-a4afd8cb7e-037fb94fb4.zip
new file mode 100644
index 0000000000..7d6bd91cf9
Binary files /dev/null and b/.yarn/cache/fastify-npm-5.7.4-a4afd8cb7e-037fb94fb4.zip differ
diff --git a/packages/core/bootstrap/package.json b/packages/core/bootstrap/package.json
index 4e6d24c523..7d6016036f 100644
--- a/packages/core/bootstrap/package.json
+++ b/packages/core/bootstrap/package.json
@@ -21,7 +21,7 @@
     "axios": "1.13.4",
     "decimal.js": "^10.3.1",
     "fast-redact": "^3.0.1",
-    "fastify": "^5.0.0",
+    "fastify": "^5.7.3",
     "lodash": "^4.17.23",
     "lru-cache": "^6.0.0",
     "object-hash": "^2.2.0",
diff --git a/packages/sources/bank-frick/package.json b/packages/sources/bank-frick/package.json
index ee38d22667..a47a0de162 100644
--- a/packages/sources/bank-frick/package.json
+++ b/packages/sources/bank-frick/package.json
@@ -30,7 +30,7 @@
   "dependencies": {
     "@chainlink/external-adapter-framework": "2.11.2",
     "axios": "1.13.4",
-    "fastify": "^5.0.0",
+    "fastify": "^5.7.3",
     "tslib": "^2.3.1"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index 458a345b7e..d71c191c32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2418,7 +2418,7 @@ __metadata:
     "@types/jest": "npm:^29.5.14"
     "@types/node": "npm:22.14.1"
     axios: "npm:1.13.4"
-    fastify: "npm:^5.0.0"
+    fastify: "npm:^5.7.3"
     nock: "npm:13.5.6"
     tslib: "npm:^2.3.1"
     typescript: "npm:5.8.3"
@@ -3156,7 +3156,7 @@ __metadata:
     axios: "npm:1.13.4"
     decimal.js: "npm:^10.3.1"
     fast-redact: "npm:^3.0.1"
-    fastify: "npm:^5.0.0"
+    fastify: "npm:^5.7.3"
     lodash: "npm:^4.17.23"
     lru-cache: "npm:^6.0.0"
     mock-socket: "npm:9.3.1"
@@ -14558,7 +14558,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fastify@npm:5.6.2, fastify@npm:^5.0.0":
+"fastify@npm:5.6.2":
   version: 5.6.2
   resolution: "fastify@npm:5.6.2"
   dependencies:
@@ -14604,6 +14604,29 @@ __metadata:
   languageName: node
   linkType: hard
 
+"fastify@npm:^5.7.3":
+  version: 5.7.4
+  resolution: "fastify@npm:5.7.4"
+  dependencies:
+    "@fastify/ajv-compiler": "npm:^4.0.5"
+    "@fastify/error": "npm:^4.0.0"
+    "@fastify/fast-json-stringify-compiler": "npm:^5.0.0"
+    "@fastify/proxy-addr": "npm:^5.0.0"
+    abstract-logging: "npm:^2.0.1"
+    avvio: "npm:^9.0.0"
+    fast-json-stringify: "npm:^6.0.0"
+    find-my-way: "npm:^9.0.0"
+    light-my-request: "npm:^6.0.0"
+    pino: "npm:^10.1.0"
+    process-warning: "npm:^5.0.0"
+    rfdc: "npm:^1.3.1"
+    secure-json-parse: "npm:^4.0.0"
+    semver: "npm:^7.6.0"
+    toad-cache: "npm:^3.7.0"
+  checksum: 10/037fb94fb40b85b9da430dd5314ab3326ee40b10419ca81d514a5e948b67547aacfa60131e330a8e28927b8b875c70c7a156954118a06c958e9c20b24ab00881
+  languageName: node
+  linkType: hard
+
 "fastq@npm:^1.11.0, fastq@npm:^1.17.1, fastq@npm:^1.6.0":
   version: 1.17.1
   resolution: "fastq@npm:1.17.1"