diff --git a/spec/tester_ar/Gemfile.lock b/spec/tester_ar/Gemfile.lock
index f2228001..068245f9 100644
--- a/spec/tester_ar/Gemfile.lock
+++ b/spec/tester_ar/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
     sqlite3 (1.4.1)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)