diff --git a/Gemfile.lock b/Gemfile.lock
index 74aca51..01bb4d2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,8 +7,8 @@ GEM
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    addressable (2.7.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     bulma-clean-theme (0.8)
       jekyll (~> 3.8)
       jekyll-feed (~> 0.11)