diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 7054572c..ff263e47 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -1,8 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.0)
+      public_suffix (>= 2.0.2, < 5.0)
     colorator (1.1.0)
     concurrent-ruby (1.1.5)
     em-websocket (0.5.1)
@@ -59,7 +59,7 @@ GEM
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     posix-spawn (0.3.13)
-    public_suffix (3.1.1)
+    public_suffix (4.0.6)
     rake (12.3.3)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)