diff --git a/Gemfile.lock b/Gemfile.lock
index b5bd95a..6a5fcd2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,15 +2,13 @@ GEM
   remote: https://rubygems.org/
   specs:
     backports (3.15.0)
-    ipaddr (1.2.2)
     multi_json (1.14.1)
     mustermann (1.0.3)
     nio4r (2.5.8)
     openssl (2.1.2)
-      ipaddr
     puma (4.3.11)
       nio4r (~> 2.0)
-    rack (2.2.3)
+    rack (2.2.6.4)
     rack-contrib (2.1.0)
       rack (~> 2.0)
     rack-protection (2.0.7)