diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 759e330..6bd685d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
           python-version: "3.10"
           cache: "pip"
 
-      - uses: awalsh128/cache-apt-pkgs-action@2c09a5e66da6c8016428a2172bd76e5e4f14bb17 # v1.5.3
+      - uses: awalsh128/cache-apt-pkgs-action@acb598e5ddbc6f68a970c5da0688d2f3a9f04d05 # v1.6.0
         with:
           packages: sox libsox-dev ffmpeg
 
diff --git a/fs2/model.py b/fs2/model.py
index 8902560..2f624e0 100644
--- a/fs2/model.py
+++ b/fs2/model.py
@@ -56,7 +56,7 @@ def __init__(
                 logger.error(f"{pydantic_validation_error_shortener(e)}")
                 raise TypeError(
                     "Unable to load config.  Possible causes: is it really a FastSpeech2Config? or the correct version?"
-                )
+                ) from e
 
         if stats is not None and not isinstance(stats, Stats):
             stats = Stats(**stats)
diff --git a/fs2/tests/test_cli.py b/fs2/tests/test_cli.py
index 7c2eb64..9e82b3b 100644
--- a/fs2/tests/test_cli.py
+++ b/fs2/tests/test_cli.py
@@ -53,7 +53,7 @@ def test_help(self):
 
     def test_no_model(self):
         result = self.runner.invoke(app, ["synthesize"])
-        self.assertIn("Missing argument 'MODEL_PATH'.", result.stdout)
+        self.assertIn("Missing argument 'MODEL_PATH'.", result.output)
 
     def test_filelist_and_text(self):
         with TemporaryDirectory() as tmpdir:
@@ -76,7 +76,7 @@ def test_filelist_and_text(self):
             self.assertIn(
                 "Got arguments for both text and a filelist - this will only process the text."
                 " Please re-run without providing text if you want to run batch synthesis",
-                result.stdout,
+                result.output,
             )
 
     def test_no_filelist_nor_text(self):
@@ -91,7 +91,7 @@ def test_no_filelist_nor_text(self):
                     str(model),
                 ),
             )
-            self.assertIn("You must define either --text or --filelist", result.stdout)
+            self.assertIn("You must define either --text or --filelist", result.output)
 
     def mock_synthesis(self, *_args, **_kwargs):
         print(_kwargs["model"].config)