diff --git a/Gemfile.lock b/Gemfile.lock
index d66dc8c..26f216c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,16 +21,16 @@ GEM
     json (2.3.0)
     method_source (0.9.2)
     minitest (5.14.0)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     pg (1.2.2)
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.2.2)
+    rack (2.2.4)
     rack-contrib (2.1.0)
       rack (~> 2.0)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.3)
       rack
     rake (13.0.1)
     rspec (3.9.0)
@@ -46,11 +46,11 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    ruby2_keywords (0.0.2)
-    sinatra (2.0.8.1)
-      mustermann (~> 1.0)
-      rack (~> 2.0)
-      rack-protection (= 2.0.8.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
     sinatra-activerecord (2.0.14)
       activerecord (>= 3.2)
@@ -58,7 +58,7 @@ GEM
     sinatra-cross_origin (0.4.0)
     sqlite3 (1.4.2)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tzinfo (1.2.6)
       thread_safe (~> 0.1)
     zeitwerk (2.2.2)