diff --git a/Gemfile.lock b/Gemfile.lock
index ffc21873f8c..ecdf6f84780 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -250,7 +250,7 @@ GEM
     nanaimo (0.4.0)
     nap (1.1.0)
     naturally (2.3.0)
-    nkf (0.2.0)
+    nkf (0.3.0)
     octokit (10.0.0)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)