diff --git a/src/Server.hs b/src/Server.hs
index 7ca31a0..2de1a5a 100644
--- a/src/Server.hs
+++ b/src/Server.hs
@@ -112,7 +112,8 @@ handlers =
       notificationHandler SInitialized $ \_not -> pure (),
       notificationHandler STextDocumentDidOpen $ \_not -> pure (),
       notificationHandler STextDocumentDidSave $ \_not -> pure (),
-      notificationHandler STextDocumentDidChange $ \_not -> pure ()
+      notificationHandler STextDocumentDidChange $ \_not -> pure (),
+      notificationHandler SCancelRequest $ \_not -> pure ()
       -- -- syntax highlighting
       -- , requestHandler STextD_cumentSemanticTokensFull $ \req responder -> do
       --   result <- Handler.onHighlight (req ^. (params . textDocument . uri))