diff --git a/Gemfile.lock b/Gemfile.lock
index fdf8eccc688..fd4445d93d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -217,7 +217,7 @@ GEM
       hike (~> 1.2)
       rack (~> 1.0)
       tilt (~> 1.1, != 1.3.0)
-    thor (0.15.3)
+    thor (0.15.4)
     tilt (1.3.3)
     timecop (0.3.5)
     treetop (1.4.10)
diff --git a/vendor/cache/thor-0.15.3.gem b/vendor/cache/thor-0.15.3.gem
deleted file mode 100644
index 645cc8320e3..00000000000
Binary files a/vendor/cache/thor-0.15.3.gem and /dev/null differ
diff --git a/vendor/cache/thor-0.15.4.gem b/vendor/cache/thor-0.15.4.gem
new file mode 100644
index 00000000000..0c11b8c9291
Binary files /dev/null and b/vendor/cache/thor-0.15.4.gem differ