diff --git a/Gemfile.lock b/Gemfile.lock
index 82b2de6..7d542eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,13 +21,13 @@ GEM
       concurrent-ruby (~> 1.0)
     method_source (1.0.0)
     minitest (5.14.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     pry (0.13.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
     rack (2.2.3)
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.3)
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -41,20 +41,20 @@ GEM
       rack (>= 1.0)
       rack-test (~> 0.6.2)
       ripl (>= 0.7.0)
-    ruby2_keywords (0.0.2)
+    ruby2_keywords (0.0.5)
     shotgun (0.9.2)
       rack (>= 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)
     sinatra-activerecord (2.0.18)
       activerecord (>= 4.1)
       sinatra (>= 1.0)
     sqlite3 (1.4.2)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tux (0.3.0)
       ripl (>= 0.3.5)
       ripl-multi_line (>= 0.2.4)