diff --git a/package.json b/package.json
index e3d14e2b..92b006d4 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
   },
   "optionalDependencies": {
     "tree-sitter": "0.20.6",
-    "tree-sitter-c-sharp": "0.20.0",
+    "tree-sitter-c-sharp": "0.21.2",
     "tree-sitter-cli": "0.20.8",
     "tree-sitter-go": "0.20.0",
     "tree-sitter-java": "0.20.2",