diff --git a/Gemfile.lock b/Gemfile.lock
index b683091..e6f9785 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,6 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    base64 (0.3.0)
     coderay (1.1.2)
     daemons (1.3.1)
     diff-lcs (1.3)
@@ -24,13 +25,14 @@ GEM
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.7.0)
     lumberjack (1.2.4)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
     mini_mime (1.0.2)
     multi_json (1.15.0)
-    mustermann (2.0.2)
+    mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
     nenv (0.3.0)
     notiffany (0.1.3)
@@ -39,9 +41,14 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.2.14)
-    rack-protection (2.2.3)
-      rack
+    rack (3.2.3)
+    rack-protection (4.2.0)
+      base64 (>= 0.1.0)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.1)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -60,23 +67,26 @@ GEM
     rspec-support (3.9.2)
     ruby2_keywords (0.0.5)
     shellany (0.0.1)
-    sinatra (2.2.3)
-      mustermann (~> 2.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.3)
+    sinatra (4.2.0)
+      logger (>= 1.6.0)
+      mustermann (~> 3.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.2.0)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    sinatra-contrib (2.2.3)
-      multi_json
-      mustermann (~> 2.0)
-      rack-protection (= 2.2.3)
-      sinatra (= 2.2.3)
+    sinatra-contrib (4.2.0)
+      multi_json (>= 0.0.2)
+      mustermann (~> 3.0)
+      rack-protection (= 4.2.0)
+      sinatra (= 4.2.0)
       tilt (~> 2.0)
-    thin (1.7.2)
+    thin (2.0.1)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
-      rack (>= 1, < 3)
+      logger
+      rack (>= 1, < 4)
     thor (1.0.1)
-    tilt (2.1.0)
+    tilt (2.6.1)
 
 PLATFORMS
   ruby