diff --git a/Gemfile.lock b/Gemfile.lock
index 6e7351c3a4a..3111dee22e0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,7 +79,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.5)
+    public_suffix (4.0.6)
     rack (2.2.3)
     rack-protection (2.0.8.1)
       rack