diff --git a/.gitignore b/.gitignore
index 5de83bd..a8cb8af 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 # Ignore C++ executable files and C++ libraries.
-*
-!*.*
+**
+!**.*
+!**/
+.git/