diff --git a/Dockerfile b/Dockerfile
index dc501b9..950fec6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 ARG PY_VERSION=3.9
 
-FROM amazon/aws-lambda-python:$PY_VERSION as install-stage
+FROM amazon/aws-lambda-python:$PY_VERSION AS install-stage
 
 # Declare it a second time so it's brought into this scope.
 ARG PY_VERSION=3.9
@@ -25,7 +25,7 @@ COPY src/py$PY_VERSION/ .
 # underlying pip calls.
 RUN pipenv sync --system --extra-pip-args="--no-cache-dir --target ${LAMBDA_TASK_ROOT}"
 
-FROM amazon/aws-lambda-python:$PY_VERSION as build-stage
+FROM amazon/aws-lambda-python:$PY_VERSION AS build-stage
 
 ###
 # For a list of pre-defined annotation keys and value types see:
diff --git a/docker-compose.yml b/docker-compose.yml
index 6e46434..f8988c7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,4 @@
 ---
-version: '3.2'
-
 services:
   build_deployment_package:
     build: .