diff --git a/.github/workflows/makefile.yml b/.github/workflows/makefile.yml
index 0cc19f3..c99ba3c 100644
--- a/.github/workflows/makefile.yml
+++ b/.github/workflows/makefile.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: [ 3.7, 3.8, 3.9 ]
+        python: [ 3.9 ]
 
     steps:
     - uses: actions/checkout@v2