diff --git a/README b/README
index 8bfbc91..27e7274 100644
--- a/README
+++ b/README
@@ -37,7 +37,7 @@ OS X prerequisites
 
 - XCode's Command Line Tools
 - ObjP 1.2.1 (http://bitbucket.org/hsoft/objp)
-- xibless 0.3.0 (https://bitbucket.org/hsoft/xibless)
+- xibless 0.5.0 (https://bitbucket.org/hsoft/xibless)
 
 Windows prerequisites
 ---------------------
diff --git a/requirements-osx.txt b/requirements-osx.txt
index 4e8c580..2022982 100644
--- a/requirements-osx.txt
+++ b/requirements-osx.txt
@@ -1,3 +1,3 @@
 -r requirements.txt
 objp>=1.2.1
-xibless>=0.3.1
\ No newline at end of file
+xibless>=0.5.0
\ No newline at end of file