diff --git a/README.md b/README.md
index 70f7977..cc977ff 100644
--- a/README.md
+++ b/README.md
@@ -7,12 +7,13 @@ GitHub Action to make zip deployment to AWS Lambda with requirements in a separa
 This action automatically installs requirements, zips and deploys the code including the dependencies as a separate layer.
 
 #### Python 3.8 is supported
+#### Also supports uploading dependencies greater than 50MB to layer (via s3 buckets)
 
 ### Pre-requisites
 In order for the Action to have access to the code, you must use the `actions/checkout@master` job before it. 
 
 ### Structure
-- Lambda code should be `lambda_function.py`** unless you want to have a customized file name.
+- Lambda code should be `lambda_function.py` unless you want to have a customized file name.
 - **Dependencies must be stored in a `requirements.txt`**
 
 ### Environment variables
@@ -32,6 +33,8 @@ Storing credentials as secret is stronly recommended.
     - Partial ARN - `123456789012:function:function-name`
 - `requirements_txt`
     The name/path for the `requirements.txt` file. Defaults to `requirements.txt`.
+- `s3_bucket`
+    Name of S3 bucket to upload dependencies.zip to (for dependencies over 50 MB)
 
 ### Example Workflow
 ```yaml
diff --git a/action.yml b/action.yml
index 008dae2..b1a4f2d 100644
--- a/action.yml
+++ b/action.yml
@@ -12,6 +12,9 @@ inputs:
   lambda_function_name:
     description: The Lambda function name. Check the AWS docs/readme for examples.
     required: true
+  s3_bucket:
+    description: s3 bucket to put deps in
+    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'
@@ -20,6 +23,7 @@ runs:
     - ${{ inputs.lambda_layer_arn }}
     - ${{ inputs.lambda_function_name }}
     - ${{ inputs.lambda_region }}
+    - ${{ inputs.s3_bucket }}
 branding:
   icon: 'cloud-lightning'
-  color: 'white'
\ No newline at end of file
+  color: 'white'
diff --git a/entrypoint.sh b/entrypoint.sh
index 56856b5..f779598 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -15,7 +15,14 @@ install_zip_dependencies(){
 
 publish_dependencies_as_layer(){
 	echo "Publishing dependencies as a layer..."
-	local result=$(aws lambda publish-layer-version --layer-name "${INPUT_LAMBDA_LAYER_ARN}" --zip-file fileb://dependencies.zip)
+	if [[ -z ${INPUT_S3_BUCKET} ]]; then
+		echo "uploading zip directly"
+		local result=$(aws lambda publish-layer-version --layer-name "${INPUT_LAMBDA_LAYER_ARN}" --zip-file fileb://dependencies.zip)
+	else
+		echo "uploading zip to s3"
+		aws s3 cp ./dependencies.zip "s3://${INPUT_S3_BUCKET}/"
+		local result=$(aws lambda publish-layer-version --layer-name "${INPUT_LAMBDA_LAYER_ARN}" --content "S3Bucket=${INPUT_S3_BUCKET},S3Key=dependencies.zip")
+	fi
 	LAYER_VERSION=$(jq '.Version' <<< "$result")
 	rm -rf python
 	rm dependencies.zip
@@ -41,4 +48,4 @@ deploy_lambda_function(){
 }
 
 deploy_lambda_function
-echo "Each step completed, check the logs if any error occured."
\ No newline at end of file
+echo "Each step completed, check the logs if any error occured."