diff --git a/Gemfile.lock b/Gemfile.lock
index 85d38303f49e5..e0265344155e5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -308,7 +308,9 @@ 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_magick (4.9.2)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -333,7 +335,8 @@ GEM
     multi_json (1.13.1)
     multipart-post (2.0.0)
     mustache (1.1.0)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     mysql2 (0.5.2)
     mysql2 (0.5.2-x64-mingw32)
     mysql2 (0.5.2-x86-mingw32)
@@ -364,10 +367,10 @@ GEM
       thor
     raabro (1.1.6)
     racc (1.4.15)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-cache (1.8.0)
       rack (>= 0.4)
-    rack-protection (2.0.5)
+    rack-protection (2.2.0)
       rack
     rack-proxy (0.6.5)
       rack
@@ -420,6 +423,7 @@ GEM
     ruby-progressbar (1.10.1)
     ruby-vips (2.0.13)
       ffi (~> 1.9)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     rubyzip (1.2.3)
     rufus-scheduler (3.6.0)
@@ -454,10 +458,10 @@ GEM
       faraday (~> 0.9)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    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)
     sneakers (2.11.0)
       bunny (~> 2.12)
@@ -484,7 +488,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     thread_safe (0.3.6-java)
-    tilt (2.0.9)
+    tilt (2.0.10)
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)