diff --git a/backend/.gitignore b/backend/.gitignore
index 6ebfbd5d7..6276e6131 100644
--- a/backend/.gitignore
+++ b/backend/.gitignore
@@ -1,5 +1,6 @@
 *-s.c
-*-s.cc
+*-s.cpp
 *.conf
+.dirstamp
 dll-preload.c
 dll-preload.h