diff --git a/.github/workflows/run-tests.yaml b/.github/workflows/run-tests.yaml
index 19a5395..e33a049 100644
--- a/.github/workflows/run-tests.yaml
+++ b/.github/workflows/run-tests.yaml
@@ -1,6 +1,8 @@
 name: run-tests
 
-on: [push]
+on:
+  push:
+  pull_request:
 
 jobs:
   test-ubuntu:
diff --git a/tests/unit/test_cli.py b/tests/unit/test_cli.py
index 886d0b9..e4a331c 100644
--- a/tests/unit/test_cli.py
+++ b/tests/unit/test_cli.py
@@ -17,6 +17,7 @@ def common_expected_args():
         "output_format": "FLAC",
         "output_bitrate": None,
         "normalization_threshold": 0.9,
+        "amplification_threshold": 0.6,
         "output_single_stem": None,
         "invert_using_spec": False,
         "sample_rate": 44100,