diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 9717d1b..0ed6f20 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,6 +4,8 @@ updates:
     directory: "/cdk"
     schedule:
       interval: "weekly"
+    ignore:
+      - dependency-name: aws-cdk-lib
     groups:
       minor-and-patch:
         update-types:
diff --git a/cdk/requirements.txt b/cdk/requirements.txt
index 1b0dfb2..392ba6a 100644
--- a/cdk/requirements.txt
+++ b/cdk/requirements.txt
@@ -1,2 +1,2 @@
-aws-cdk-lib>=2.257.0
+aws-cdk-lib==2.257.0
 constructs>=10.6.0