diff --git a/.changeset/astro-nanoid-security-update.md b/.changeset/astro-nanoid-security-update.md
new file mode 100644
index 00000000000..26ebf2f478c
--- /dev/null
+++ b/.changeset/astro-nanoid-security-update.md
@@ -0,0 +1,5 @@
+---
+'@clerk/astro': patch
+---
+
+Bump `nanoid` to 5.1.16 to pick up an upstream security fix.
diff --git a/packages/astro/package.json b/packages/astro/package.json
index 1563d8f9d17..9293be14345 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -92,7 +92,7 @@
   "dependencies": {
     "@clerk/backend": "workspace:^",
     "@clerk/shared": "workspace:^",
-    "nanoid": "5.1.6",
+    "nanoid": "5.1.16",
     "nanostores": "1.0.1"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 80d04ba60dd..7837b43293b 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -364,8 +364,8 @@ importers:
         specifier: workspace:^
         version: link:../shared
       nanoid:
-        specifier: 5.1.6
-        version: 5.1.6
+        specifier: 5.1.16
+        version: 5.1.16
       nanostores:
         specifier: 1.0.1
         version: 1.0.1
@@ -11791,8 +11791,8 @@ packages:
     engines: {node: ^10 || ^12 || ^13.7 || ^14 || >=15.0.1}
     hasBin: true
 
-  nanoid@5.1.6:
-    resolution: {integrity: sha512-c7+7RQ+dMB5dPwwCp4ee1/iV/q2P6aK1mTZcfr1BTuVlyW9hJYiMPybJCcnBlQtuSmTIWNeazm/zqNoZSSElBg==}
+  nanoid@5.1.16:
+    resolution: {integrity: sha512-kVrnsrJqMR8+oLJnGEmSWw9BivK5mt7H3FZatVRjrc5wGqFYuBxX1yG7+A7Gi5AefkX6t/oCkizcQgpu0cY1dQ==}
     engines: {node: ^18 || >=20}
     hasBin: true
 
@@ -28252,7 +28252,7 @@ snapshots:
 
   nanoid@3.3.12: {}
 
-  nanoid@5.1.6: {}
+  nanoid@5.1.16: {}
 
   nanostores@1.0.1: {}