diff --git a/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock b/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
index 7d11541..4fd541f 100644
--- a/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
+++ b/2017-01-29-deep-dive-into-database-timeouts-in-rails/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
       sprockets (>= 3.0.0)
     thor (0.20.0)
     thread_safe (0.3.6)
-    tzinfo (1.2.4)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)