diff --git a/.gitignore b/.gitignore
index d0dfdb41..44f1ef3d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -69,4 +69,6 @@ tmp_*.txt
 *scratch*
 .dirac-symbol-index*
 .dirac/*
-.ailiance-agent/
\ No newline at end of file
+.ailiance-agent/
+# Serena MCP memory store — local notes, may hold infra credentials. Never commit.
+.serena/
\ No newline at end of file