diff --git a/Gemfile.lock b/Gemfile.lock
index 0267498..63cef64 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -171,7 +171,7 @@ GEM
     multi_json (1.14.1)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mustermann (1.1.0)
+    mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.2)
     nokogiri (1.10.7)
@@ -202,10 +202,10 @@ GEM
       pry (>= 0.10.4)
     public_suffix (4.0.2)
     puma (3.12.2)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)
-    rack-protection (2.0.7)
+    rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -264,7 +264,7 @@ GEM
       rspec-mocks (~> 3.9.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.1)
-    ruby2_keywords (0.0.1)
+    ruby2_keywords (0.0.5)
     ruby_dep (1.5.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -286,10 +286,10 @@ GEM
       sprockets-rails
       tilt
     selectize-rails (0.12.6)
-    sinatra (2.0.7)
+    sinatra (2.2.0)
       mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.7)
+      rack (~> 2.2)
+      rack-protection (= 2.2.0)
       tilt (~> 2.0)
     spring (2.1.0)
     spring-watcher-listen (2.0.1)