diff --git a/.gitignore b/.gitignore
index 45f2464..a8d69e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,7 +37,10 @@
 # Visual Studio output directories
 vs2015/Debug
 vs2015/Release
+vs2015/x64
 vs2015/paq8o8pre/Debug
 vs2015/paq8o8pre/Release
+vs2015/paq8o8pre/x64
 vs2015/Precomp/Debug
-vs2015/Precomp/Release
\ No newline at end of file
+vs2015/Precomp/Release
+vs2015/Precomp/x64
\ No newline at end of file