diff --git a/Gemfile.lock b/Gemfile.lock
index 5a7d904..5082383 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,10 +9,10 @@ GEM
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.8)
-    nokogiri (1.13.6)
+    nokogiri (1.13.8)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogiri (1.13.6-x86_64-linux)
+    nokogiri (1.13.8-x86_64-linux)
       racc (~> 1.4)
     opentracing (0.5.0)
     puma (5.6.4)