diff --git a/lib/solid_queue/processes/registrable.rb b/lib/solid_queue/processes/registrable.rb
index 084e8faf..24941238 100644
--- a/lib/solid_queue/processes/registrable.rb
+++ b/lib/solid_queue/processes/registrable.rb
@@ -53,7 +53,7 @@ def stop_heartbeat
       end
 
       def heartbeat
-        process.with_lock(&:heartbeat)
+        process.with_lock { process.heartbeat }
       rescue ActiveRecord::RecordNotFound
         self.process = nil
         wake_up