diff --git a/source/package.json b/source/package.json
index 6d1525fa0..58f731898 100644
--- a/source/package.json
+++ b/source/package.json
@@ -30,7 +30,8 @@
     "aws-cdk-migration": "^1.135.0"
   },
   "devDependencies": {
-    "lerna": "^3.22.1"
+    "lerna": "^3.22.1",
+    "@types/prettier": "2.6.0"
   },
   "workspaces": {
     "packages": [
diff --git a/source/patterns/@aws-solutions-constructs/aws-lambda-elasticachememcached/package.json b/source/patterns/@aws-solutions-constructs/aws-lambda-elasticachememcached/package.json
index 9696fb652..db8da8a48 100644
--- a/source/patterns/@aws-solutions-constructs/aws-lambda-elasticachememcached/package.json
+++ b/source/patterns/@aws-solutions-constructs/aws-lambda-elasticachememcached/package.json
@@ -94,4 +94,4 @@
     "Amazon Elasticache",
     "AWS Lambda"
   ]
-}
+}
\ No newline at end of file