diff --git a/Gemfile.lock b/Gemfile.lock
index 0fad29b..ec146e7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,13 +30,13 @@ GEM
     mime-types-data (3.2021.0901)
     minitest (5.17.0)
     multi_xml (0.6.0)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.8)
     puma (5.6.4)
       nio4r (~> 2.0)
+    rack-protection (2.2.3)
     rack (2.2.6.4)
-    rack-protection (2.2.0)
       rack
     rake (13.0.6)
     rb-fsevent (0.11.0)
@@ -45,10 +45,10 @@ GEM
     rerun (0.13.1)
       listen (~> 3.0)
     ruby2_keywords (0.0.5)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.2.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sinatra-activerecord (2.0.23)
       activerecord (>= 4.1)
@@ -56,7 +56,7 @@ GEM
     speedtest (0.2.3)
       httparty (~> 0.13)
     sqlite3 (1.4.2)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     whenever (1.0.0)