diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 7f624ab5e4..260c25ea7c 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -36,10 +36,10 @@ concurrency:
 jobs:
   pytest:
     runs-on: ubuntu-latest
-    # The parallel suite now reaches coverage collation at ~15 minutes on the
-    # hosted runner. Keep the fail-safe bounded while leaving enough headroom
-    # for collection and post-test coverage reporting.
-    timeout-minutes: 25
+    # The parallel suite can take more than 15 minutes through coverage
+    # collation on the hosted runner. Keep the fail-safe bounded while leaving
+    # enough headroom for runner variance and post-test coverage reporting.
+    timeout-minutes: 30
     steps:
       - name: Check out repository
         uses: actions/checkout@v7