diff --git a/.gitignore b/.gitignore
index 0a5e557..a79054d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@
 *.zip
 *.tar.gz
 *.rar
+*.impl
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*