diff --git a/Gemfile.lock b/Gemfile.lock
index 44a4595..1986faf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,14 +7,12 @@ GEM
   remote: https://rubygems.org/
   specs:
     diff-lcs (1.6.2)
-    json (2.19.3)
     rake (13.4.2)
     rake-compiler (1.3.1)
       rake
-    rake-compiler-dock (1.11.0)
-    rb_sys (0.9.126)
-      json (>= 2)
-      rake-compiler-dock (= 1.11.0)
+    rake-compiler-dock (1.12.0)
+    rb_sys (0.9.127)
+      rake-compiler-dock (= 1.12.0)
     rspec (3.13.2)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -35,7 +33,7 @@ PLATFORMS
 
 DEPENDENCIES
   mq-ruby!
-  rake (~> 13.4)
+  rake (~> 13.4, ~> 13.0)
   rake-compiler (~> 1.2)
   rb_sys (~> 0.9)
   rspec (~> 3.0)