diff --git a/Gemfile.lock b/Gemfile.lock
index a3b5a55..7d1d424 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
       multi_xml (~> 0.5)
       rack (~> 1.2)
     rack (1.6.0)
-    rake (10.4.2)
+    rake (13.0.1)
     rdoc (4.2.0)
       json (~> 1.4)