diff --git a/Gemfile.lock b/Gemfile.lock
index 1ad84ac..872b1a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,14 +52,16 @@ GEM
     libxml-ruby (2.1.2)
     mime-types (1.19)
     multi_json (1.5.0)
+    mustermann (3.0.0)
+      ruby2_keywords (~> 0.0.1)
     net-scp (1.0.4)
       net-ssh (>= 1.99.1)
     net-ssh (2.6.2)
     nokogiri (1.5.6)
     opensrs (0.3.2)
       libxml-ruby (~> 2.1.2)
-    rack (1.3.5)
-    rack-protection (1.1.4)
+    rack (2.2.4)
+    rack-protection (3.0.4)
       rack
     rake (0.8.7)
     rspec (2.6.0)
@@ -71,19 +73,21 @@ GEM
       diff-lcs (~> 1.1.2)
     rspec-mocks (2.6.0)
     ruby-hmac (0.4.0)
+    ruby2_keywords (0.0.5)
     ruby_parser (2.3.1)
       sexp_processor (~> 3.0)
     sexp_processor (3.0.7)
     simplecov (0.4.2)
       simplecov-html (~> 0.4.4)
     simplecov-html (0.4.5)
-    sinatra (1.3.1)
-      rack (~> 1.3, >= 1.3.4)
-      rack-protection (~> 1.1, >= 1.1.2)
-      tilt (~> 1.3, >= 1.3.3)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
+      tilt (~> 2.0)
     term-ansicolor (1.0.7)
     terminal-table (1.4.5)
-    tilt (1.3.3)
+    tilt (2.0.11)
 
 PLATFORMS
   ruby