diff --git a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-custom-build/requirements.txt b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-custom-build/requirements.txt
index 877c89e099f9f..b1fe59f163280 100644
--- a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-custom-build/requirements.txt
+++ b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-custom-build/requirements.txt
@@ -1,7 +1,7 @@
 # Lock versions of pip packages
 certifi==2023.7.22
 chardet==3.0.4
-idna==2.10
+idna==3.7
 urllib3==1.26.18
 # Requests used by this lambda
 requests==2.31.0
diff --git a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-poetry/poetry.lock b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-poetry/poetry.lock
index 4b599fa224039..a21cca1e71cfc 100644
--- a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-poetry/poetry.lock
+++ b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-poetry/poetry.lock
@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 1.8.2 and should not be changed by hand.
 
 [[package]]
 name = "certifi"
@@ -97,13 +97,13 @@ files = [
 
 [[package]]
 name = "idna"
-version = "3.4"
+version = "3.7"
 description = "Internationalized Domain Names in Applications (IDNA)"
 optional = false
 python-versions = ">=3.5"
 files = [
-    {file = "idna-3.4-py3-none-any.whl", hash = "sha256:90b77e79eaa3eba6de819a0c442c0b4ceefc341a7a2ab77d7562bf49f425c5c2"},
-    {file = "idna-3.4.tar.gz", hash = "sha256:814f528e8dead7d329833b91c5faa87d60bf71824cd12a7530b5526063d02cb4"},
+    {file = "idna-3.7-py3-none-any.whl", hash = "sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0"},
+    {file = "idna-3.7.tar.gz", hash = "sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc"},
 ]
 
 [[package]]
diff --git a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-project/shared/requirements.txt b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-project/shared/requirements.txt
index 353789b82c9df..404d7b7716fe8 100644
--- a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-project/shared/requirements.txt
+++ b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler-project/shared/requirements.txt
@@ -1,6 +1,6 @@
 # Lock versions of pip packages
 certifi==2023.7.22
 chardet==3.0.4
-idna==2.10
+idna==3.7
 urllib3==1.26.18
 # Requests used by this lambda
diff --git a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler/requirements.txt b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler/requirements.txt
index 877c89e099f9f..b1fe59f163280 100644
--- a/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler/requirements.txt
+++ b/packages/@aws-cdk/aws-lambda-python-alpha/test/lambda-handler/requirements.txt
@@ -1,7 +1,7 @@
 # Lock versions of pip packages
 certifi==2023.7.22
 chardet==3.0.4
-idna==2.10
+idna==3.7
 urllib3==1.26.18
 # Requests used by this lambda
 requests==2.31.0