diff --git a/Gemfile.lock b/Gemfile.lock
index 6339666..7cf35da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -86,14 +86,17 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
     mono_logger (1.1.0)
     msgpack (1.2.9)
     multi_json (1.13.1)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nio4r (2.3.1)
     nokogiri (1.10.1)
       mini_portile2 (~> 2.4.0)
@@ -103,8 +106,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     puma (3.12.0)
-    rack (2.0.6)
-    rack-protection (2.0.5)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -149,6 +152,7 @@ GEM
       redis-namespace (~> 1.6)
       sinatra (>= 0.9.2)
       vegas (~> 0.1.2)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     sass (3.7.3)
       sass-listen (~> 4.0.0)
@@ -161,10 +165,10 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    sinatra (2.0.5)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.5)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -183,7 +187,7 @@ GEM
       ref
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)