diff --git a/.github/workflows/autotests.yml b/.github/workflows/autotests.yml
index 0cb60cc..e55408c 100644
--- a/.github/workflows/autotests.yml
+++ b/.github/workflows/autotests.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.6, 3.7, 3.8, 3.9]
+        python-version: [3.7, 3.8, 3.9]
 
     steps:
     - name: Checkout repository
@@ -58,6 +58,7 @@ jobs:
 
     - name: Install dependencies
       run: |
+        poetry env use python ${matrix.python-version}
         poetry install
 
     - name: Run tests