diff --git a/Gemfile.lock b/Gemfile.lock
index 6e121d9..87d7486 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,7 +104,7 @@ GEM
       ripl-multi_line (>= 0.2.4)
       ripl-rack (>= 0.2.0)
       sinatra (>= 1.2.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     xpath (3.2.0)
       nokogiri (~> 1.8)