diff --git a/.github/workflows/run-tests.yaml b/.github/workflows/run-tests.yaml
index 2b64f2c..6c1c412 100644
--- a/.github/workflows/run-tests.yaml
+++ b/.github/workflows/run-tests.yaml
@@ -12,6 +12,9 @@ jobs:
       matrix:
         python-version:
           - "3.4"
+          - "3.5"
+          - "3.6"
+          - "3.7"
           - "3.8"
           - "3.9"
           - "3.10"