diff --git a/Gemfile.lock b/Gemfile.lock
index 7359f94..758ce66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -47,7 +47,7 @@ GEM
     method_source (1.0.0)
     minitest (5.14.1)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.2)
     process-group (1.2.1)
@@ -67,19 +67,19 @@ GEM
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.2)
-    rack-protection (2.0.8.1)
+    rack (2.2.4)
+    rack-protection (2.2.3)
       rack
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     samovar (2.1.4)
       console (~> 1.0)
       mapping (~> 1.0)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     timers (4.3.0)
 
 PLATFORMS