diff --git a/Gemfile.lock b/Gemfile.lock
index c6dcd293..f13fa7ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -66,8 +66,8 @@ GEM
     middleman-syntax (1.2.1)
       middleman-core (~> 3.0)
       rouge (~> 0.3.0)
-    multi_json (1.7.8)
-    rack (1.5.2)
+    multi_json (1.14.1)
+    rack (1.6.11)
     rack-livereload (0.3.15)
       rack
     rack-protection (1.5.2)
@@ -87,7 +87,7 @@ GEM
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
-    sprockets (2.10.0)
+    sprockets (2.12.5)
       hike (~> 1.2)
       multi_json (~> 1.0)
       rack (~> 1.0)