diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5f411d9..8760b60 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,8 +8,8 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ["3.9"]
-        poetry-version: ["1.3.1"]
+        python-version: ["3.9.13"]
+        poetry-version: ["1.4.2"]
     steps:
       - name: Checkout repository and submodules
         uses: actions/checkout@v2