diff --git a/Gemfile.lock b/Gemfile.lock
index 504bacb6..e1a77a4a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -131,7 +131,7 @@ GEM
     stringio (3.1.7)
     test-unit (3.6.8)
       power_assert
-    thor (1.3.2)
+    thor (1.4.0)
     thread_safe (0.3.6)
     unicode-display_width (3.1.4)
       unicode-emoji (~> 4.0, >= 4.0.4)