diff --git a/Gemfile.lock b/Gemfile.lock
index f4f3d7c..8ff86bc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -157,14 +157,16 @@ GEM
     mime-types-data (3.2016.0521)
     mini_portile2 (2.1.0)
     multi_json (1.12.1)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     nokogiri (1.7.1)
       mini_portile2 (~> 2.1.0)
     parser (2.4.0.0)
       ast (~> 2.2)
     powerpack (0.1.1)
     puma (3.12.0)
-    rack (1.6.5)
-    rack-protection (1.5.3)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rainbow (2.2.1)
     rake (12.0.0)
@@ -193,11 +195,13 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.8.1)
-    sinatra (1.4.8)
-      rack (~> 1.5)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
-    tilt (2.0.7)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
+      tilt (~> 2.0)
+    tilt (2.0.11)
     trollop (2.1.2)
     typhoeus (1.1.2)
       ethon (>= 0.9.0)