diff --git a/.gitignore b/.gitignore
index 60b06ac..3896ff0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,3 +66,6 @@ yarn-error.log*
 *.swp
 .idea/
 .vscode/
+
+# Family doctrine doc: internal; keep out of this public repo going forward
+DOCTRINE.md