diff --git a/Gemfile.lock b/Gemfile.lock
index 1fa8b86..3b3dc45 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,6 +64,8 @@ GEM
       nokogiri (>= 1.3.1)
     mime-types (1.16)
     mustache (0.12.0)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.4.4)
     notifiers (1.1.0)
     oily_png (0.3.0)
@@ -71,7 +73,9 @@ GEM
     polyglot (0.3.1)
     postmark (0.9.5)
       tmail
-    rack (1.2.1)
+    rack (2.2.3)
+    rack-protection (2.2.0)
+      rack
     rack-test (0.5.7)
       rack (>= 1.0)
     rake (0.8.7)
@@ -99,6 +103,7 @@ GEM
       linecache19 (>= 0.5.11)
       ruby-debug-base19 (>= 0.11.19)
     ruby-progressbar (0.0.9)
+    ruby2_keywords (0.0.5)
     ruby_core_source (0.1.4)
       archive-tar-minitar (>= 0.5.2)
     rubyzip (0.9.4)
@@ -110,9 +115,11 @@ GEM
       rubyzip
     shotgun (0.8)
       rack (>= 1.0)
-    sinatra (1.1.2)
-      rack (~> 1.1)
-      tilt (~> 1.2)
+    sinatra (2.2.0)
+      mustermann (~> 1.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
+      tilt (~> 2.0)
     terminitor (0.4.1)
       github (~> 0.6.0)
       rb-appscript
@@ -127,7 +134,7 @@ GEM
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
     thor (0.14.6)
-    tilt (1.2.1)
+    tilt (2.0.10)
     tmail (1.2.7.1)
     treetop (1.4.9)
       polyglot (>= 0.3.1)