diff --git a/docker/Dockerfile b/docker/Dockerfile
index c0bfe963..ee9e8334 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -4,7 +4,7 @@ WORKDIR /app
 ADD pyproject.toml .
 ADD requirements.txt .
 ADD docs docs
-RUN pip install . && rm pyproject.toml requirements.txt
+RUN pip install --no-cache-dir . && rm pyproject.toml requirements.txt
 ENV PYTHONPATH=/app
 
 FROM base AS github_app
@@ -33,7 +33,7 @@ CMD ["python", "pr_agent/servers/azuredevops_server_webhook.py"]
 
 FROM base AS test
 ADD requirements-dev.txt .
-RUN pip install -r requirements-dev.txt && rm requirements-dev.txt
+RUN pip install --no-cache-dir -r requirements-dev.txt && rm requirements-dev.txt
 ADD pr_agent pr_agent
 ADD tests tests
 
diff --git a/docker/Dockerfile.lambda b/docker/Dockerfile.lambda
index 54aa1374..d078b34e 100644
--- a/docker/Dockerfile.lambda
+++ b/docker/Dockerfile.lambda
@@ -5,8 +5,8 @@ RUN yum update -y && \
     yum clean all
 
 ADD pyproject.toml requirements.txt .
-RUN pip install . && rm pyproject.toml
-RUN pip install mangum==0.17.0
+RUN pip install --no-cache-dir . && rm pyproject.toml
+RUN pip install --no-cache-dir mangum==0.17.0
 COPY pr_agent/ ${LAMBDA_TASK_ROOT}/pr_agent/
 
 CMD ["pr_agent.servers.serverless.serverless"]