diff --git a/Gemfile.lock b/Gemfile.lock
index 5379ab63..c6ae8d8b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -246,7 +246,7 @@ GEM
     httparty (0.18.1)
       mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
-    i18n (1.10.0)
+    i18n (1.8.11)
       concurrent-ruby (~> 1.0)
     icalendar (2.7.1)
       ice_cube (~> 0.16)