diff --git a/Casks/p/perimeter81.rb b/Casks/p/perimeter81.rb
index e0b25316bb..823cd6164d 100644
--- a/Casks/p/perimeter81.rb
+++ b/Casks/p/perimeter81.rb
@@ -9,7 +9,7 @@ cask "perimeter81" do
   homepage "https://perimeter81.com/"
 
   livecheck do
-    url "https://support.perimeter81.com/v1/docs/en/downloading-the-agent/"
+    url "https://support.perimeter81.com/v1/docs/en/downloading-the-agent"
     regex(/href=.*?Perimeter81[._-]v?(\d+(?:\.\d+)+)\.pkg/i)
   end