diff --git a/dist/index.js b/dist/index.js
index 8147e7c..20624a8 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -12119,7 +12119,7 @@ function getCacherUrl() {
     const runnerArch = process.env.RUNNER_ARCH;
     const runnerOs = process.env.RUNNER_OS;
     const binarySuffix = `${runnerArch}-${runnerOs}`;
-    const urlPrefix = `https://install.determinate.systems/magic-nix-cache-priv`;
+    const urlPrefix = `https://install.determinate.systems/magic-nix-cache-closure`;
     if (coreExports.getInput('source-url')) {
         return coreExports.getInput('source-url');
     }
diff --git a/src/index.ts b/src/index.ts
index a34ff22..ee9e1b3 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -33,7 +33,7 @@ function getCacherUrl() : string {
   const runnerArch = process.env.RUNNER_ARCH;
   const runnerOs = process.env.RUNNER_OS;
   const binarySuffix = `${runnerArch}-${runnerOs}`;
-  const urlPrefix = `https://install.determinate.systems/magic-nix-cache-priv`;
+  const urlPrefix = `https://install.determinate.systems/magic-nix-cache-closure`;
   if (core.getInput('source-url')) {
     return core.getInput('source-url');
   }