diff --git a/Gemfile.lock b/Gemfile.lock
index 7d52a83..fe32fb3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -217,7 +217,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    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)
@@ -226,7 +228,8 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mustermann (1.0.3)
+    mustermann (2.0.2)
+      ruby2_keywords (~> 0.0.1)
     netrc (0.11.0)
     nio4r (2.3.1)
     nokogiri (1.10.4)
@@ -277,10 +280,10 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.7)
+    rack (2.2.4)
     rack-attack (6.0.0)
       rack (>= 1.0, < 3)
-    rack-protection (2.0.5)
+    rack-protection (2.2.3)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -370,6 +373,7 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.4.0)
     ruby-progressbar (1.10.0)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     ruby_http_client (3.3.0)
     rubyzip (1.3.0)
@@ -414,10 +418,10 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    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)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -439,7 +443,7 @@ GEM
       unicode-display_width (~> 1.1, >= 1.1.1)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.11)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)