diff --git a/.gitignore b/.gitignore
index ccf1add084b2ec33cc5291d3da9be6976fee2e39..fc8ea87b68f0fdf0c05a9d92e15d7e3e403384e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *~
+*.bak
 *.pyc
 *.pyo
 *.so