diff --git a/.gitignore b/.gitignore
index c718a018..6d6be743 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,6 +32,7 @@ jspm_packages/
 .yarn-integrity
 .cache
 *.DS_STORE
+!.node-version
 !/.projenrc.js
 /test-reports/
 junit.xml
diff --git a/.node-version b/.node-version
new file mode 100644
index 00000000..02c8b485
--- /dev/null
+++ b/.node-version
@@ -0,0 +1 @@
+18.18.0
diff --git a/.projenrc.ts b/.projenrc.ts
index ced52ad0..dfc4778b 100644
--- a/.projenrc.ts
+++ b/.projenrc.ts
@@ -40,7 +40,7 @@ const project = new awscdk.AwsCdkConstructLibrary({
 
   // Keep synchronized with https://github.com/nodejs/release#release-schedule
   minNodeVersion: '18.12.0', // 'MAINTENANCE' (first LTS)
-  maxNodeVersion: '20.7.0', // 'CURRENT'
+  maxNodeVersion: '20.8.0', // 'CURRENT'
   workflowNodeVersion: '18.x', // 'ACTIVE'
 
   npmRegistryUrl: 'https://npm.pkg.github.com',
@@ -62,7 +62,7 @@ const project = new awscdk.AwsCdkConstructLibrary({
   license: 'Apache-2.0',
   copyrightPeriod: '2023-',
   copyrightOwner: 'Amazon.com, Inc. or its affiliates. All Rights Reserved.',
-  gitignore: ['*.DS_STORE'],
+  gitignore: ['*.DS_STORE', '!.node-version'],
   stability: 'experimental',
   sampleCode: false,
   stale: true,
diff --git a/package.json b/package.json
index 04aa098d..a4e0ea95 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "generative-ai"
   ],
   "engines": {
-    "node": ">= 18.12.0 <= 20.7.0"
+    "node": ">= 18.12.0 <= 20.8.0"
   },
   "main": "lib/index.js",
   "license": "Apache-2.0",