diff --git a/Gemfile.lock b/Gemfile.lock
index 4dbf94a..30eeadc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GEM
       concurrent-ruby (~> 1.0)
     method_source (1.0.0)
     minitest (5.14.4)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     parallel (1.20.1)
     parser (3.0.1.0)
@@ -32,8 +32,8 @@ GEM
     pry (0.14.0)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.3)
-    rack-protection (2.1.0)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
     rainbow (3.0.0)
     rake (13.0.3)
@@ -53,19 +53,19 @@ GEM
     rubocop-rake (0.5.1)
       rubocop
     ruby-progressbar (1.11.0)
-    ruby2_keywords (0.0.4)
+    ruby2_keywords (0.0.5)
     shotgun (0.9.2)
       rack (>= 1.0)
-    sinatra (2.1.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.1.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sinatra-activerecord (2.0.22)
       activerecord (>= 4.1)
       sinatra (>= 1.0)
     temple (0.8.2)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.0.0)