diff --git a/Gemfile.lock b/Gemfile.lock
index ffea538..24c9701 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
     simplecov-html (0.7.1)
     term-ansicolor (1.2.2)
       tins (~> 0.8)
-    thor (0.18.1)
+    thor (1.4.0)
     tins (0.9.0)
     unf (0.1.4)
       unf_ext