diff --git a/Gemfile.lock b/Gemfile.lock
index 99f444f..a755089 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -105,7 +105,7 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
-    rake (10.0.4)
+    rake (13.0.6)
     rdoc (3.12.2)
       json (~> 1.4)
     ref (1.0.4)