diff --git a/Casks/kportal.rb b/Casks/kportal.rb
index 3c2c03f..461ad00 100644
--- a/Casks/kportal.rb
+++ b/Casks/kportal.rb
@@ -1,24 +1,24 @@
 # This file was generated by GoReleaser. DO NOT EDIT.
 cask "kportal" do
-  version "0.13.17"
+  version "0.13.18"
 
   on_macos do
     on_arm do
-      sha256 "6ec9655fea8cc574062b347bf5075a502600b3a26a1ef8d1b565d6bf5b7c89ad"
+      sha256 "e9af82695d42767219b40fbb8e89a9e4f3eaf62213b524066eeb2a73385c2345"
       url "https://github.com/lukaszraczylo/kportal/releases/download/v#{version}/kportal-#{version}-darwin-arm64.tar.gz"
     end
     on_intel do
-      sha256 "f9e9f7893741aacda98a801f4ae21dd976965b7cb74c0560dc013f81d1d6862d"
+      sha256 "66c09dbd5e0e98a4295aadddc4205cb54a685b27eba4070fefc9bdb436c08e10"
       url "https://github.com/lukaszraczylo/kportal/releases/download/v#{version}/kportal-#{version}-darwin-amd64.tar.gz"
     end
   end
   on_linux do
     on_arm do
-      sha256 "79b5bb8b9a0008ae9b680d3a946b6afec47c12902d0634fd5a7ea389984ae03d"
+      sha256 "a1f6c5aed711d22fa68adb8e7ce219057b4893d2c052fe248088c67bbe57614d"
       url "https://github.com/lukaszraczylo/kportal/releases/download/v#{version}/kportal-#{version}-linux-arm64.tar.gz"
     end
     on_intel do
-      sha256 "cfe5a13857ad86608d2823cd1dffb1149f29c38b62752511dcab085dee0aced2"
+      sha256 "94fef4d8a3519f28fa443067158bc3a6c641e8e225eb6e32c13901f283fc1591"
       url "https://github.com/lukaszraczylo/kportal/releases/download/v#{version}/kportal-#{version}-linux-amd64.tar.gz"
     end
   end
@@ -33,9 +33,10 @@ cask "kportal" do
 
   binary "kportal"
 
-  postflight_steps do
-    on_macos do
-      run "/usr/bin/xattr", args: ["-dr", "com.apple.quarantine", "{{staged_path}}/kportal"]
+  postflight do
+    if OS.mac?
+      system_command "/usr/bin/xattr",
+                     args: ["-dr", "com.apple.quarantine", "#{staged_path}/kportal"]
     end
   end