diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index e34cb154..1adfe8cb 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -172,7 +172,7 @@ GEM
       sprockets (>= 3.0.0)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext