diff --git a/packages/workbench/package.json b/packages/workbench/package.json
index aaff1a21a..cbc0bed8a 100644
--- a/packages/workbench/package.json
+++ b/packages/workbench/package.json
@@ -13,7 +13,7 @@
     "typecheck": "tsc --project tsconfig.json"
   },
   "dependencies": {
-    "@effect/atom-react": "4.0.0-rc.117",
+    "@effect/atom-react": "4.0.0",
     "@modelcontextprotocol/client": "2.0.0",
     "@xterm/addon-fit": "0.11.0",
     "@xterm/xterm": "6.0.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c536d530f..e907bd137 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -446,8 +446,8 @@ importers:
   packages/workbench:
     dependencies:
       '@effect/atom-react':
-        specifier: 4.0.0-rc.117
-        version: 4.0.0-rc.117(effect@4.0.0-rc.117)(react@19.3.0)(scheduler@0.27.0)
+        specifier: 4.0.0
+        version: 4.0.0(effect@4.0.0-rc.117)(react@19.3.0)(scheduler@0.27.0)
       '@modelcontextprotocol/client':
         specifier: 2.0.0
         version: 2.0.0
@@ -695,10 +695,10 @@ packages:
     resolution: {integrity: sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==}
     engines: {node: '>=0.1.90'}
 
-  '@effect/atom-react@4.0.0-rc.117':
-    resolution: {integrity: sha512-e6swZzC+2sPY9LfICB1YQBdn6DvnNmS1p4KwppzfHjT9lv+fyDVI9IxymUQ/Oduc58rOV/4jBhZv1tu7vgx47w==}
+  '@effect/atom-react@4.0.0':
+    resolution: {integrity: sha512-VPP2oOjj56iwOpL5aIGbu7Qhb4+1sFNdU16aI5of3JqToqWWX9eJPBfeiPyQ1eTYof1hnNX1auyRiTORSfLT6g==}
     peerDependencies:
-      effect: ^4.0.0-rc.117
+      effect: ^4.0.0
       react: '>=19.0.0 <20.0.0'
       scheduler: '>=0.25.0 <0.28.0'
 
@@ -3549,7 +3549,7 @@ snapshots:
   '@colors/colors@1.5.0':
     optional: true
 
-  '@effect/atom-react@4.0.0-rc.117(effect@4.0.0-rc.117)(react@19.3.0)(scheduler@0.27.0)':
+  '@effect/atom-react@4.0.0(effect@4.0.0-rc.117)(react@19.3.0)(scheduler@0.27.0)':
     dependencies:
       effect: 4.0.0-rc.117
       react: 19.3.0