diff --git a/Gemfile.lock b/Gemfile.lock
index 8a1704d..d567481 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    crass (1.0.4)
+    crass (1.0.6)
     equivalent-xml (0.6.0)
       nokogiri (>= 1.4.3)
     erubis (2.7.0)
@@ -18,19 +18,19 @@ GEM
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.2)
     multi_xml (0.6.0)
     mustermann (1.0.2)
     mysql2 (0.5.2)
     netrc (0.11.0)
     nio4r (2.5.8)
-    nokogiri (1.10.4)
-      mini_portile2 (~> 2.4.0)
-    nokogumbo (2.0.1)
-      nokogiri (~> 1.8, >= 1.8.4)
+    nokogiri (1.15.3)
+      mini_portile2 (~> 2.8.2)
+      racc (~> 1.4)
     open4 (1.3.4)
     puma (4.3.12)
       nio4r (~> 2.0)
+    racc (1.7.1)
     rack (2.0.6)
     rack-protection (2.0.3)
       rack
@@ -40,10 +40,9 @@ GEM
     rerun (0.13.0)
       listen (~> 3.0)
     ruby_dep (1.5.0)
-    sanitize (5.1.0)
+    sanitize (6.0.2)
       crass (~> 1.0.2)
-      nokogiri (>= 1.8.0)
-      nokogumbo (~> 2.0)
+      nokogiri (>= 1.12.0)
     sequel (5.12.0)
     sinatra (2.0.3)
       mustermann (~> 1.0)