diff --git a/.gitignore b/.gitignore
index a107f43f9daf3a5e20979ab020326e9a20b8f610..f6c0392d9e40155edbbabb0992a56e2a0932c086 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ output*
 # ignore standard IntelliJ files
 .idea/
 *.iml
+*.ipr
 *.iws
 
 # ignore standard Vim and Emacs temp files