diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 4b26da0..72a3f45 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -22,11 +22,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ['3.6', '3.7', '3.8', '3.9', 'pypy3']
+        python: ['3.6', '3.7', '3.8', '3.9', 'pypy3-3.7']
         exclude:
           # pypy3 currently fails to run on Windows
           - os: windows-latest
-            python: pypy3
+            python: pypy3-3.7
           # the loop fails to close in the Mac version of 3.9
           - os: macos-latest
             python: '3.9'