diff --git a/Gemfile.lock b/Gemfile.lock
index 5486ac5..5079bd7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,30 +18,32 @@ GEM
       temple (>= 0.8.0)
       tilt
     kramdown (2.1.0)
-    mustermann (1.0.3)
-    rack (2.0.7)
-    rack-protection (2.0.5)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
     ruby-graphviz (1.2.4)
+    ruby2_keywords (0.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    sinatra (2.0.5)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     temple (0.8.1)
-    thin (1.7.2)
+    thin (1.8.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
-    tilt (2.0.9)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby