diff --git a/example/Gemfile.lock b/example/Gemfile.lock
index 265d088b..51d97b3e 100644
--- a/example/Gemfile.lock
+++ b/example/Gemfile.lock
@@ -15,8 +15,8 @@ GEM
       minitest (>= 5.1)
       mutex_m
       tzinfo (~> 2.0)
-    addressable (2.8.7)
-      public_suffix (>= 2.0.2, < 7.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     algoliasearch (1.27.5)
       httpclient (~> 2.8, >= 2.8.3)
       json (>= 1.5.1)
@@ -115,6 +115,7 @@ DEPENDENCIES
   concurrent-ruby (< 1.3.8)
   logger
   mutex_m
+  nkf
   xcodeproj (< 1.26.0)
 
 RUBY VERSION