diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index c4670b1a..1d4fde3e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -21,14 +21,14 @@ jobs:
             postgres: 12
           - python: 3.9
             postgres: 13
-          - python: 3.10
+          - python: "3.10"
             postgres: 13
 
           # Opposite extremes of the supported Py/PG range, other architecture
           - python: 3.6
             postgres: 13
             architecture: 'x86'
-          - python: 3.10
+          - python: "3.10"
             postgres: 9.5
             architecture: 'x86'