diff --git a/.gitignore b/.gitignore
index be50c1e..135eacb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,3 +20,4 @@ s3transfer-0.1.9.dist-info
 botocore-1.4.68.dist-info
 docutils-0.12.dist-info
 .idea
+.venv
\ No newline at end of file
diff --git a/README.md b/README.md
index 9d22478..6e1f556 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Automated Image Cleanup for Amazon ECR
-The Python script and Lambda function described here help clean up images in [Amazon ECR](https://aws.amazon.com/ecr). The script looks for images that are not used in running [Amazon ECS](https://aws.amazon.com/ecs) tasks that can be deleted. You can configure the script to print the image list first to confirm deletions, specify a region, or specify a number of images to keep for potential rollbacks.
+The Python script and Lambda function described here help clean up images in [Amazon ECR](https://aws.amazon.com/ecr). The script looks for images that are not used in running [Amazon ECS](https://aws.amazon.com/ecs) tasks and [Amazon Lambda](https://aws.amazon.com/lambda) container images that can be deleted. You can configure the script to print the image list first to confirm deletions, specify a region, or specify a number of images to keep for potential rollbacks.
 
 ## Authenticate with AWS
 [Configuring the AWS Command Line Interface.](http://docs.aws.amazon.com/cli/latest/userguide/cli-chap-getting-started.html)
diff --git a/main.py b/main.py
index 458a1e4..7aea1fc 100644
--- a/main.py
+++ b/main.py
@@ -83,6 +83,15 @@ def discover_delete_images(regionname):
                                     if container['image'] not in running_containers:
                                         running_containers.append(container['image'])
 
+    lambda_client = boto3.client('lambda', region_name=regionname)
+    listlambdas_paginator = lambda_client.get_paginator('list_functions')
+    for response_listlambdapaginator in listlambdas_paginator.paginate():
+        for function in response_listlambdapaginator['Functions']:
+            if function["PackageType"] == "Image":
+                function_config = lambda_client.get_function(FunctionName=function["FunctionName"])
+                if function_config["Code"]["ImageUri"] not in running_containers:
+                    running_containers.append(function_config["Code"]["ImageUri"])
+
     print("Images that are running:")
     for image in running_containers:
         print(image)