diff --git a/tests/test_server.py b/tests/test_server.py
index c0777f5..1184fb3 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -11,7 +11,7 @@ from pygls.types import (CompletionContext, CompletionParams,
                          InitializeParams, Position, TextDocumentIdentifier,
                          TextDocumentItem, TextDocumentPositionParams)
 
-CALL_TIMEOUT = 2
+CALL_TIMEOUT = None
 
 
 def _init(client: LanguageServer, root: Path):