diff --git a/Gemfile.lock b/Gemfile.lock
index 806b464..13621cd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,8 @@ GEM
     mini_mime (1.0.1)
     minitest (5.14.1)
     moneta (1.0.0)
-    mustermann (1.0.3)
+    mustermann (3.0.0)
+      ruby2_keywords (~> 0.0.1)
     padrino (0.14.3)
       padrino-admin (= 0.14.3)
       padrino-cache (= 0.14.3)
@@ -53,8 +54,8 @@ GEM
       mime-types (< 3)
       padrino-core (= 0.14.3)
     padrino-support (0.14.3)
-    rack (2.2.2)
-    rack-protection (2.0.4)
+    rack (2.2.4)
+    rack-protection (3.0.4)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -75,22 +76,23 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
+    ruby2_keywords (0.0.5)
     sass (3.6.0)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
     sequel (5.13.0)
-    sinatra (2.0.4)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.4)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
       tilt (~> 2.0)
     sqlite3 (1.3.13)
     temple (0.8.0)
     thor (0.20.0)
     thread_safe (0.3.6)
-    tilt (2.0.8)
+    tilt (2.0.11)
     tzinfo (1.2.7)
       thread_safe (~> 0.1)