diff --git a/package.json b/package.json
index a63ce63..949d377 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "typescript": "~5.8.2",
     "vite": "7.3.5",
     "vitest": "^4.1.11",
-    "zod": "^3.24.1"
+    "zod": "^4.6.5"
   },
   "pnpm": {
     "overrides": {
diff --git a/packages/blast/package.json b/packages/blast/package.json
index bddcee7..cd75378 100644
--- a/packages/blast/package.json
+++ b/packages/blast/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Stackbilt-dev/charter#readme",
   "dependencies": {
-    "zod": "^3.24.1"
+    "zod": "^4.6.5"
   },
   "publishConfig": {
     "access": "public",
diff --git a/packages/cli/package.json b/packages/cli/package.json
index dfc1281..43c8048 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -66,7 +66,7 @@
     "@stackbilt/surface": "workspace:*",
     "@stackbilt/types": "workspace:*",
     "@stackbilt/validate": "workspace:*",
-    "zod": "^3.24.1"
+    "zod": "^4.6.5"
   },
   "license": "Apache-2.0",
   "author": "Stackbilt LLC"
diff --git a/packages/core/package.json b/packages/core/package.json
index d192c5f..049ac87 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Stackbilt-dev/charter#readme",
   "dependencies": {
-    "zod": "^3.24.1"
+    "zod": "^4.6.5"
   },
   "publishConfig": {
     "access": "public",
diff --git a/packages/surface/package.json b/packages/surface/package.json
index 4eedb58..a0e2123 100644
--- a/packages/surface/package.json
+++ b/packages/surface/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Stackbilt-dev/charter#readme",
   "dependencies": {
-    "zod": "^3.24.1"
+    "zod": "^4.6.5"
   },
   "publishConfig": {
     "access": "public",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d396ce6..3b7f1db 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -39,16 +39,16 @@ importers:
         specifier: ^4.1.11
         version: 4.1.11(@types/node@26.2.0)(vite@7.3.5(@types/node@26.2.0)(tsx@4.23.13))
       zod:
-        specifier: ^3.24.1
-        version: 3.25.76
+        specifier: ^4.6.5
+        version: 4.6.5
 
   packages/adf: {}
 
   packages/blast:
     dependencies:
       zod:
-        specifier: ^3.24.1
-        version: 3.25.76
+        specifier: ^4.6.5
+        version: 4.6.5
 
   packages/ci:
     dependencies:
@@ -66,7 +66,7 @@ importers:
     dependencies:
       '@modelcontextprotocol/sdk':
         specifier: ^1.30.0
-        version: 1.30.0(zod@3.25.76)
+        version: 1.30.0(zod@4.6.5)
       '@stackbilt/adf':
         specifier: workspace:*
         version: link:../adf
@@ -98,14 +98,14 @@ importers:
         specifier: workspace:*
         version: link:../validate
       zod:
-        specifier: ^3.24.1
-        version: 3.25.76
+        specifier: ^4.6.5
+        version: 4.6.5
 
   packages/core:
     dependencies:
       zod:
-        specifier: ^3.24.1
-        version: 3.25.76
+        specifier: ^4.6.5
+        version: 4.6.5
 
   packages/drift:
     dependencies:
@@ -130,8 +130,8 @@ importers:
   packages/surface:
     dependencies:
       zod:
-        specifier: ^3.24.1
-        version: 3.25.76
+        specifier: ^4.6.5
+        version: 4.6.5
 
   packages/types: {}
 
@@ -1040,8 +1040,8 @@ packages:
     peerDependencies:
       zod: ^3.25.28 || ^4
 
-  zod@3.25.76:
-    resolution: {integrity: sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==}
+  zod@4.6.5:
+    resolution: {integrity: sha512-v5l/aFXZQeai4awLbOpSoHecE9UiMrnfx75tEXLjNonXVARxQ5mOeipTjROUchszUNCqnE+hqAMujRsRHsut2Q==}
 
 snapshots:
 
@@ -1129,7 +1129,7 @@ snapshots:
 
   '@jridgewell/sourcemap-codec@1.5.5': {}
 
-  '@modelcontextprotocol/sdk@1.30.0(zod@3.25.76)':
+  '@modelcontextprotocol/sdk@1.30.0(zod@4.6.5)':
     dependencies:
       '@hono/node-server': 2.0.10(hono@4.13.7)
       ajv: 8.18.0
@@ -1146,8 +1146,8 @@ snapshots:
       json-schema-typed: 8.0.2
       pkce-challenge: 5.0.1
       raw-body: 3.0.2
-      zod: 3.25.76
-      zod-to-json-schema: 3.25.2(zod@3.25.76)
+      zod: 4.6.5
+      zod-to-json-schema: 3.25.2(zod@4.6.5)
     transitivePeerDependencies:
       - supports-color
 
@@ -1825,8 +1825,8 @@ snapshots:
 
   wrappy@1.0.2: {}
 
-  zod-to-json-schema@3.25.2(zod@3.25.76):
+  zod-to-json-schema@3.25.2(zod@4.6.5):
     dependencies:
-      zod: 3.25.76
+      zod: 4.6.5
 
-  zod@3.25.76: {}
+  zod@4.6.5: {}