diff --git a/04-Bind-Mount-Jekyll-Static-Site/Gemfile.lock b/04-Bind-Mount-Jekyll-Static-Site/Gemfile.lock
index 60a78a3..7397499 100644
--- a/04-Bind-Mount-Jekyll-Static-Site/Gemfile.lock
+++ b/04-Bind-Mount-Jekyll-Static-Site/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.6)
@@ -47,7 +47,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.3)
+    public_suffix (4.0.6)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)