diff --git a/Gemfile.lock b/Gemfile.lock
index fc8d49f..85cc0e8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -420,7 +420,7 @@ GEM
       sprockets (>= 2.8, < 4.0)
     sqlite3 (1.7.2)
       mini_portile2 (~> 2.8.0)
-    thor (1.3.1)
+    thor (1.4.0)
     tilt (2.3.0)
     timeout (0.4.1)
     turbolinks (5.2.1)