diff --git a/src/dora_openarm_classifier/main.py b/src/dora_openarm_classifier/main.py
index d833d20..8a76f50 100644
--- a/src/dora_openarm_classifier/main.py
+++ b/src/dora_openarm_classifier/main.py
@@ -215,7 +215,9 @@ def main():
                 flush=True,
             )
             node.send_output(
-                "result", pa.array([agg]), metadata={"verdict": verdict, "frame": n}
+                "result",
+                pa.array([agg], type=pa.float32()),
+                metadata={"verdict": verdict, "frame": n},
             )