diff --git a/Dockerfile b/Dockerfile
index 8a106cb..90bf033 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,5 +3,10 @@ FROM public.ecr.aws/lambda/python:3.9
 # Copy function code
 COPY . ${LAMBDA_TASK_ROOT}/
 
+# Install dependencies
+RUN pip3 install pipenv
+RUN pipenv requirements > requirements.txt
+RUN pip3 install -r requirements.txt --target "${LAMBDA_TASK_ROOT}"
+
 # Default handler. See README for how to override to a different handler.
 CMD [ "lambdas.format_input.lambda_handler" ]