diff --git a/Formula/pledge.rb b/Formula/pledge.rb
index 6fc9e6b..4995124 100644
--- a/Formula/pledge.rb
+++ b/Formula/pledge.rb
@@ -5,20 +5,20 @@ class Pledge < Formula
 
   on_macos do
     if Hardware::CPU.arm?
-      url "${homepage}/releases/download/v{version}/pledge-darwin-arm64"
+      url "#{homepage}/releases/download/v#{version}/pledge-darwin-arm64"
       sha256 "sha256:8d72cc6840f9e1e995356725f198d19fd159917b6443f9daf2d0bc1e8f974ef3"
     else
-      url "${homepage}/releases/download/v{version}/pledge-darwin-amd64"
+      url "#{homepage}/releases/download/v#{version}/pledge-darwin-amd64"
       sha256 "sha256:cd4f30297bbfd0c924e41aa07ff300b335df9244dbda9914639aa077f30bd261"
     end
   end
 
   on_linux do
     if Hardware::CPU.arm?
-      url "${homepage}/releases/download/v{version}/pledge-linux-arm64"
+      url "#{homepage}/releases/download/v#{version}/pledge-linux-arm64"
       sha256 "sha256:80f02a8f8ae06a63b22ecb88ff2e63cb40ef7350beb548755e6e475396ffbca0"
     else
-      url "${homepage}/releases/download/v{version}/pledge-linux-amd64"
+      url "#{homepage}/releases/download/v#{version}/pledge-linux-amd64"
       sha256 "sha256:f3d6f7097af87f67c5e0806cc3f3718a5d9b2e42f55f973846433b44271690ed"
     end
   end