diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 48b0780..831c69e 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -64,7 +64,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     thread_safe (0.3.6)
-    tzinfo (1.2.6)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     tzinfo-data (1.2019.3)
       tzinfo (>= 1.0.0)