diff --git a/relay-reactjs-chat/package.json b/relay-reactjs-chat/package.json
index 898d3d0..4d48a54 100644
--- a/relay-reactjs-chat/package.json
+++ b/relay-reactjs-chat/package.json
@@ -40,6 +40,7 @@
     ]
   },
   "devDependencies": {
-    "@craco/craco": "7.0.0-alpha.7"
+    "@craco/craco": "7.0.0-alpha.7",
+    "typescript": "^4.7.4"
   }
 }
diff --git a/relay-reactjs-chat/pnpm-lock.yaml b/relay-reactjs-chat/pnpm-lock.yaml
index dc9d734..c536fd8 100644
--- a/relay-reactjs-chat/pnpm-lock.yaml
+++ b/relay-reactjs-chat/pnpm-lock.yaml
@@ -10,6 +10,7 @@ specifiers:
   react: ^18.2.0
   react-dom: ^18.2.0
   react-scripts: 5.0.1
+  typescript: ^4.7.4
 
 dependencies:
   '@testing-library/jest-dom': 5.16.5
@@ -23,6 +24,7 @@ dependencies:
 
 devDependencies:
   '@craco/craco': 7.0.0-alpha.7_6dh3mp4abgujcafyrw5alwgbbe
+  typescript: 4.7.4
 
 packages: