diff --git a/Gemfile.lock b/Gemfile.lock
index 72c90f8..349d04f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -173,14 +173,17 @@ 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)
     msgpack (1.2.7)
     multi_json (1.13.1)
     multipart-post (2.0.0)
-    mustermann (1.0.3)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
     net-http-persistent (3.0.0)
       connection_pool (~> 2.2)
@@ -197,9 +200,9 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
     puma (3.12.0)
-    rack (2.0.6)
+    rack (2.2.3)
     rack-cors (1.0.3)
-    rack-protection (2.0.5)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -264,6 +267,7 @@ GEM
     rspec-support (3.8.0)
     ruby-debug-ide (0.6.1)
       rake (>= 0.8.1)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     ruby_http_client (3.3.0)
     searchkick (3.1.2)
@@ -276,10 +280,10 @@ GEM
       ruby_http_client (~> 3.3.0)
       sinatra (>= 1.4.7, < 3)
     shellany (0.0.1)
-    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)
@@ -298,7 +302,7 @@ GEM
       net-http-persistent (~> 3.0)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     warden (1.2.8)