diff --git a/Gemfile.lock b/Gemfile.lock
index 48aebc0..660a876 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,6 +11,7 @@ GEM
     celluloid (0.15.2)
       timers (~> 1.1.0)
     coderay (1.1.0)
+    concurrent-ruby (1.1.10)
     diff-lcs (1.2.5)
     ffi (1.9.3)
     formatador (0.2.5)
@@ -24,7 +25,8 @@ GEM
     guard-rspec (4.2.10)
       guard (~> 2.1)
       rspec (>= 2.14, < 4.0)
-    i18n (0.7.0)
+    i18n (1.10.0)
+      concurrent-ruby (~> 1.0)
     listen (2.7.9)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)