diff --git a/.github/workflows/base_tests.yml b/.github/workflows/base_tests.yml
index 8bc7d7cd97..fbe3d1eda2 100644
--- a/.github/workflows/base_tests.yml
+++ b/.github/workflows/base_tests.yml
@@ -40,15 +40,15 @@ jobs:
             memory_management: refc
         include:
           - platform:
-            - os: linux
+              - os: linux
             builder: ubuntu-22.04
             shell: bash
           - platform:
-            - os: macos
+              - os: macos
             builder: macos-13
             shell: bash
           - platform:
-            - os: windows
+              - os: windows
             builder: windows-2022
             shell: msys {0}