diff --git a/obs/update_unstable.py b/obs/update_unstable.py
index ade8b47..cb1a2f7 100755
--- a/obs/update_unstable.py
+++ b/obs/update_unstable.py
@@ -176,9 +176,10 @@ def notify_matrix(update_data: Dict[str, List[Tuple[str, str]]]) -> None:
 
     message = template.render(repositories=update_data, date=date)
 
-    cmd = [MATRIX_COMMANDER, "--markdown", "-m", message]
+    cmd = [MATRIX_COMMANDER, "--markdown", "--loglevel", "ERROR",
+           "-m", message]
     logging.debug("Sending Matrix notification")
-    sarge.run(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+    sarge.run(cmd, stdout=subprocess.DEVNULL)
 
 
 def commit_changes(cache_file: str, repo_home: str) -> None: