diff --git a/lgtm.yml b/lgtm.yml
new file mode 100644
index 000000000..f75d3f266
--- /dev/null
+++ b/lgtm.yml
@@ -0,0 +1,5 @@
+path_classifiers:
+  external:
+    - dandi/_version.py
+    - dandi/due.py
+    - versioneer.py