diff --git a/.github/workflows/libraries_report-size-deltas.yml b/.github/workflows/libraries_report-size-deltas.yml
index 72a8fa6..272ead6 100644
--- a/.github/workflows/libraries_report-size-deltas.yml
+++ b/.github/workflows/libraries_report-size-deltas.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v1
         with:
-          python-version: '3.8.5'
+          python-version: '3.8.6'
 
       - name: Install dependencies
         run: |
diff --git a/Dockerfile b/Dockerfile
index ba3580e..48855fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.8.5
+FROM python:3.8.6
 
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY reportsizedeltas /reportsizedeltas