diff --git a/Gemfile.lock b/Gemfile.lock
index eb705c878b..9f6e6539ee 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -85,6 +85,7 @@ GEM
     nanaimo (0.4.0)
     nap (1.1.0)
     netrc (0.11.0)
+    nkf (0.3.0)
     public_suffix (4.0.7)
     rexml (3.4.4)
     ruby-macho (2.5.1)
@@ -93,12 +94,14 @@ GEM
       ethon (>= 0.18.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    xcodeproj (1.27.0)
+    xcodeproj (1.28.1)
       CFPropertyList (>= 2.3.3, < 4.0)
       atomos (~> 0.1.3)
+      base64
       claide (>= 1.0.2, < 2.0)
       colored2 (~> 3.1)
       nanaimo (~> 0.4.0)
+      nkf
       rexml (>= 3.3.6, < 4.0)
 
 PLATFORMS