diff --git a/packages/shorebird_cli/lib/src/artifact_manager.dart b/packages/shorebird_cli/lib/src/artifact_manager.dart
index 7a4009f2..c768de8f 100644
--- a/packages/shorebird_cli/lib/src/artifact_manager.dart
+++ b/packages/shorebird_cli/lib/src/artifact_manager.dart
@@ -79,7 +79,12 @@ class ArtifactManager {
       outFile.createSync();
     }
 
-    await outFile.openWrite().addStream(response.stream);
+    final ioSink = outFile.openWrite();
+    try {
+      await ioSink.addStream(response.stream);
+    } finally {
+      await ioSink.close();
+    }
     return outFile;
   }