diff --git a/Gemfile.lock b/Gemfile.lock
index 4f400e6..3ede28b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,19 +1,21 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    base64 (0.2.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     rack (2.2.8)
-    rack-protection (3.1.0)
+    rack-protection (3.2.0)
+      base64 (>= 0.1.0)
       rack (~> 2.2, >= 2.2.4)
     rake (13.1.0)
     ruby2_keywords (0.0.5)
-    sinatra (3.1.0)
+    sinatra (3.2.0)
       mustermann (~> 3.0)
       rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.1.0)
+      rack-protection (= 3.2.0)
       tilt (~> 2.0)
-    tilt (2.2.0)
+    tilt (2.3.0)
 
 PLATFORMS
   ruby