diff --git a/.github/workflows/release-pypi.yml b/.github/workflows/release-pypi.yml
index 8245c7ca..acc4e851 100644
--- a/.github/workflows/release-pypi.yml
+++ b/.github/workflows/release-pypi.yml
@@ -8,6 +8,7 @@ jobs:
       matrix:
         python-version: [3.6]
         os: [ubuntu-20.04]
+        poetry-version: [1.1.4]
     runs-on: ${{ matrix.os }}
 
     steps: