diff --git a/xwords4/android/XWords4/.gitignore b/xwords4/android/XWords4/.gitignore
index b35181c70..0ce8e1cc9 100644
--- a/xwords4/android/XWords4/.gitignore
+++ b/xwords4/android/XWords4/.gitignore
@@ -5,5 +5,6 @@ bin
 gen
 libs
 proguard.cfg
+proguard-project.txt
 obj
 res/drawable*/*gen.png