diff --git a/.github/workflows/test_python.yml b/.github/workflows/test_python.yml
index 3cf56ecbd3..d4f8897d6f 100644
--- a/.github/workflows/test_python.yml
+++ b/.github/workflows/test_python.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         group: [1, 2, 3, 4, 5, 6]
-        python: ["3.8", "3.11"]
+        python: ["3.8", "3.12"]
 
     steps:
     - uses: actions/checkout@v4
@@ -68,7 +68,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python: ["3.8", "3.11"]
+        python: ["3.8", "3.12"]
     needs: testpython
     steps:
     - name: Get durations from cache
diff --git a/source/tests/tf/test_parallel_training.py b/source/tests/tf/test_parallel_training.py
index 13346a2c30..0d9d7c1b94 100644
--- a/source/tests/tf/test_parallel_training.py
+++ b/source/tests/tf/test_parallel_training.py
@@ -40,12 +40,16 @@ def test_two_workers(self):
             stdout=sp.PIPE,
             stderr=sp.STDOUT,
         )
+        lines = []
         for line in iter(popen.stdout.readline, b""):
             if hasattr(line, "decode"):
                 line = line.decode("utf-8")
             line = line.rstrip()
+            lines.append(line)
         popen.wait()
-        self.assertEqual(0, popen.returncode, "Parallel training failed!")
+        self.assertEqual(
+            0, popen.returncode, f"Parallel training failed!\n{''.join(lines)}"
+        )
 
 
 if __name__ == "__main__":