diff --git a/lgtm.yaml b/lgtm.yaml
new file mode 100644
index 00000000..c48771ea
--- /dev/null
+++ b/lgtm.yaml
@@ -0,0 +1,5 @@
+extraction:
+  csharp:
+    index:
+      dotnet:
+        version: 6.0.400