diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b96c5d9..a92ac7b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.6", "3.7", "3.8", "3.9", "3.10"]
-        poetry-version: [1.0, 1.1.11]
+        poetry-version: [1.0, 1.1.15]
         os: [ubuntu-18.04, macos-latest, windows-latest]
     runs-on: ${{ matrix.os }}
     steps: