diff --git a/Gemfile.lock b/Gemfile.lock
index c4bafb6..2498c3e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -213,7 +213,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.3)
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
@@ -232,7 +234,8 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     net-http-persistent (3.0.0)
       connection_pool (~> 2.2)
     net_http_timeout_errors (0.3.3)
@@ -277,8 +280,8 @@ GEM
     pundit (2.0.0)
       activesupport (>= 3.0.0)
     raabro (1.1.6)
-    rack (2.0.8)
-    rack-protection (2.0.3)
+    rack (2.2.3)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -389,6 +392,7 @@ GEM
       ansi
       ast
     ruby-progressbar (1.10.0)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     rubyzip (1.2.2)
     rufus-scheduler (3.5.2)
@@ -423,10 +427,10 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sinatra (2.0.3)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.3)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     spring (2.0.2)
       activesupport (>= 4.2)
@@ -442,7 +446,7 @@ GEM
       sprockets (>= 3.0.0)
     thor (0.20.0)
     thread_safe (0.3.6)
-    tilt (2.0.8)
+    tilt (2.0.10)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)