diff --git a/Calculator-LTI/Gemfile.lock b/Calculator-LTI/Gemfile.lock
index 48cf2e7..c857497 100644
--- a/Calculator-LTI/Gemfile.lock
+++ b/Calculator-LTI/Gemfile.lock
@@ -126,7 +126,7 @@ GEM
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.1.0)
+    rake (13.0.1)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)