diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a7c2d2a..288a71a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,9 @@ jobs:
       - name: "Check out repository code"
         uses: "actions/checkout@v4"
       - name: "Setup environment"
-        uses: "networktocode/gh-action-setup-poetry-environment@v4"
+        uses: "networktocode/gh-action-setup-poetry-environment@v6"
+        with:
+          poetry-version: "1.8.5"
       - name: "Linting: ruff"
         run: "poetry run invoke ruff"
       - name: "Linting: yamllint"