diff --git a/Gemfile.lock b/Gemfile.lock
index 4a2dfc8..5e1f275 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -77,7 +77,7 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (>= 0.14.6, < 2.0)
-    rake (0.9.2.2)
+    rake (13.0.6)
     rdoc (3.12)
       json (~> 1.4)
     rubyXL (1.2.8)