diff --git a/.gitignore b/.gitignore
index e3b7fea..56daed2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,4 +18,5 @@ BuildLog.htm
 mt.dep
 debuglog.*
 *.intermediate.manifest
+xcuserdata/
 
diff --git a/framework/CocoaOniguruma.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/framework/CocoaOniguruma.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..ad409a7
--- /dev/null
+++ b/framework/CocoaOniguruma.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:CocoaOniguruma.xcodeproj">
+   </FileRef>
+</Workspace>