diff --git a/ruby/testapp/Gemfile.lock b/ruby/testapp/Gemfile.lock
index d08b8ba..3a6b859 100644
--- a/ruby/testapp/Gemfile.lock
+++ b/ruby/testapp/Gemfile.lock
@@ -103,7 +103,7 @@ GEM
       activesupport (= 4.2.5.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.5.0)
+    rake (13.0.1)
     rdoc (4.2.2)
       json (~> 1.4)
     sass (3.4.21)