diff --git a/Gemfile.lock b/Gemfile.lock
index e29d6e7..5a6e509 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
       ripl-multi_line (>= 0.2.4)
       ripl-rack (>= 0.2.0)
       sinatra (>= 1.2.1)
-    tzinfo (1.2.7)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     xpath (3.2.0)
       nokogiri (~> 1.8)