diff --git a/.github/workflows/libraries_report-size-deltas.yml b/.github/workflows/libraries_report-size-deltas.yml
index 35046e4..67e8cf4 100644
--- a/.github/workflows/libraries_report-size-deltas.yml
+++ b/.github/workflows/libraries_report-size-deltas.yml
@@ -27,7 +27,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.9.4'
+          python-version: '3.11.2'
 
       - name: Install dependencies
         run: |
diff --git a/Dockerfile b/Dockerfile
index a05fdfc..80e7f3b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.9.4
+FROM python:3.11.2
 
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY reportsizedeltas /reportsizedeltas
diff --git a/reportsizedeltas/tests/requirements.txt b/reportsizedeltas/tests/requirements.txt
index b5c63c4..bbc0036 100644
--- a/reportsizedeltas/tests/requirements.txt
+++ b/reportsizedeltas/tests/requirements.txt
@@ -1,3 +1,3 @@
 coverage==5.2.1
-pytest==5.4.2
+pytest==7.2.2
 pytest-mock==3.1.0