diff --git a/.github/workflows/update-vendored-nix-dependencies.py b/.github/workflows/update-vendored-nix-dependencies.py
index 201b6500ca..34d81b20bf 100755
--- a/.github/workflows/update-vendored-nix-dependencies.py
+++ b/.github/workflows/update-vendored-nix-dependencies.py
@@ -55,7 +55,8 @@ def create_pr(
 def update_dependencies():
     with NamedTemporaryFile() as log:
         subprocess.run(
-            ["nvfetcher", "--build-dir", "nix/_sources", "--changelog", log.name]
+            ["nvfetcher", "--build-dir", "nix/_sources", "--changelog", log.name],
+            check=True,
         )
         return Path(log.name).read_text()
 
diff --git a/unblob/extractors/command.py b/unblob/extractors/command.py
index 682d0af10d..21647ded83 100644
--- a/unblob/extractors/command.py
+++ b/unblob/extractors/command.py
@@ -54,6 +54,7 @@ def no_op():
                 stdout=stdout_file,
                 stderr=subprocess.PIPE,
                 timeout=COMMAND_TIMEOUT,
+                check=False,
             )
             if res.returncode != 0:
                 error_report = ExtractCommandFailedReport(