diff --git a/.github/workflows/python-ci.yml b/.github/workflows/python-ci.yml
index 9facdd8f..7a1f5e64 100644
--- a/.github/workflows/python-ci.yml
+++ b/.github/workflows/python-ci.yml
@@ -46,6 +46,7 @@ jobs:
     - name: Install Poetry
       uses: snok/install-poetry@v1.1.6
       with:
+        version: 1.1.7
         virtualenvs-create: true
         virtualenvs-in-project: true