diff --git a/synapse/metrics/background_process_metrics.py b/synapse/metrics/background_process_metrics.py
index 167167be0af3..e5293587e31e 100644
--- a/synapse/metrics/background_process_metrics.py
+++ b/synapse/metrics/background_process_metrics.py
@@ -191,6 +191,8 @@ def run():
 
             try:
                 yield func(*args, **kwargs)
+            except Exception:
+                logger.exception("Background process '%s' threw an exception", desc)
             finally:
                 proc.update_metrics()