diff --git a/.changeset/wicked-walls-learn.md b/.changeset/wicked-walls-learn.md
new file mode 100644
index 00000000000..bc634bfbfd3
--- /dev/null
+++ b/.changeset/wicked-walls-learn.md
@@ -0,0 +1,5 @@
+---
+"@clerk/fastify": patch
+---
+
+Remove unused cookie module.
diff --git a/packages/fastify/package.json b/packages/fastify/package.json
index ee1377640e6..495b1f050cd 100644
--- a/packages/fastify/package.json
+++ b/packages/fastify/package.json
@@ -75,7 +75,6 @@
   "dependencies": {
     "@clerk/backend": "workspace:^",
     "@clerk/shared": "workspace:^",
-    "cookies": "0.9.1",
     "fastify-plugin": "^5.1.0"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0f62ecad1c4..785c5ca0b8b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -646,9 +646,6 @@ importers:
       '@clerk/shared':
         specifier: workspace:^
         version: link:../shared
-      cookies:
-        specifier: 0.9.1
-        version: 0.9.1
       fastify-plugin:
         specifier: ^5.1.0
         version: 5.1.0
@@ -2731,7 +2728,7 @@ packages:
 
   '@expo/bunyan@4.0.1':
     resolution: {integrity: sha512-+Lla7nYSiHZirgK+U/uYzsLv/X+HaJienbD5AKX1UQZHYfWaP+9uuQluRB4GrEVWF0GZ7vEVp/jzaOT9k/SQlg==}
-    engines: {'0': node >=0.10.0}
+    engines: {node: '>=0.10.0'}
 
   '@expo/cli@0.22.28':
     resolution: {integrity: sha512-lvt72KNitGuixYD2l3SZmRKVu2G4zJpmg5V7WfUBNpmUU5oODBw/6qmiJ6kSLAlfDozscUk+BBGknBBzxUrwrA==}
@@ -7247,10 +7244,6 @@ packages:
   cookiejar@2.1.4:
     resolution: {integrity: sha512-LDx6oHrK+PhzLKJU9j5S7/Y3jM/mUHvD/DeI1WQmJn652iPC5Y4TBzC9l+5OMOXlyTTA+SmVUPm0HQUwpD5Jqw==}
 
-  cookies@0.9.1:
-    resolution: {integrity: sha512-TG2hpqe4ELx54QER/S3HQ9SRVnQnGBtKUz5bLQWtYAQ+o6GpgMs6sYUvaiJjVxb+UXwhRhAEP3m7LbsIZ77Hmw==}
-    engines: {node: '>= 0.8'}
-
   copy-to-clipboard@3.3.3:
     resolution: {integrity: sha512-2KV8NhB5JqC3ky0r9PMCAZKbUHSwtEo4CwCs0KXgruG43gX5PMqDEBbVU4OUzw2MuAWUfsuFmWvEKG5QRfSnJA==}
 
@@ -9988,10 +9981,6 @@ packages:
   jws@3.2.2:
     resolution: {integrity: sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==}
 
-  keygrip@1.1.0:
-    resolution: {integrity: sha512-iYSchDJ+liQ8iwbSI2QqsQOvqv58eJCEanyJPJi+Khyu8smkcKSFUCbPwzFcL7YVtZ6eONjqRX/38caJ7QjRAQ==}
-    engines: {node: '>= 0.6'}
-
   keyv@4.5.4:
     resolution: {integrity: sha512-oxVHkHR/EJf2CNXnWxRLW6mg7JyCCUcG0DtEGmL2ctUo1PNTin1PUil+r/+4r5MpVgC/fn1kjsx7mjSujKqIpw==}
 
@@ -13560,10 +13549,6 @@ packages:
   tslib@2.8.1:
     resolution: {integrity: sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==}
 
-  tsscmp@1.0.6:
-    resolution: {integrity: sha512-LxhtAkPDTkVCMQjt2h6eBVY28KCjikZqZfMcC15YBeNjkgUpdCfBu5HoiOTDu86v6smE8yOjyEktJ8hlbANHQA==}
-    engines: {node: '>=0.6.x'}
-
   tsup@8.5.1:
     resolution: {integrity: sha512-xtgkqwdhpKWr3tKPmCkvYmS9xnQK3m3XgxZHwSUjvfTjp7YfXe5tT3GgWi0F2N+ZSMsOeWeZFh7ZZFg5iPhing==}
     engines: {node: '>=18'}
@@ -22427,11 +22412,6 @@ snapshots:
 
   cookiejar@2.1.4: {}
 
-  cookies@0.9.1:
-    dependencies:
-      depd: 2.0.0
-      keygrip: 1.1.0
-
   copy-to-clipboard@3.3.3:
     dependencies:
       toggle-selection: 1.0.6
@@ -25738,10 +25718,6 @@ snapshots:
       jwa: 1.4.2
       safe-buffer: 5.2.1
 
-  keygrip@1.1.0:
-    dependencies:
-      tsscmp: 1.0.6
-
   keyv@4.5.4:
     dependencies:
       json-buffer: 3.0.1
@@ -30225,8 +30201,6 @@ snapshots:
 
   tslib@2.8.1: {}
 
-  tsscmp@1.0.6: {}
-
   tsup@8.5.1(jiti@2.6.1)(postcss@8.5.13)(tsx@4.20.6)(typescript@5.8.3)(yaml@2.8.3):
     dependencies:
       bundle-require: 5.1.0(esbuild@0.27.7)