diff --git a/106-Connecting-to-EC2-Instances-Using-Session-Manager/cdk-AWS-Cookbook-106/setup.py b/106-Connecting-to-EC2-Instances-Using-Session-Manager/cdk-AWS-Cookbook-106/setup.py
index 48dfc34..e00d77d 100644
--- a/106-Connecting-to-EC2-Instances-Using-Session-Manager/cdk-AWS-Cookbook-106/setup.py
+++ b/106-Connecting-to-EC2-Instances-Using-Session-Manager/cdk-AWS-Cookbook-106/setup.py
@@ -19,7 +19,7 @@
     packages=setuptools.find_packages(where="cdk_aws_cookbook_106"),
 
     install_requires=[
-        "aws-cdk-lib==2.0.0-rc.21",
+        "aws-cdk-lib>=2.0.0-rc.21",
         "constructs>=10.0.0,<11.0.0",
     ],