diff --git a/dist/setup/index.js b/dist/setup/index.js
index 18a06b50..e6a90b60 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -98336,7 +98336,7 @@ async function getManifest() {
     catch (err) {
         const message = err instanceof Error ? err.message : String(err);
         // Fail loudly so the action doesn't exit 0 without installing Python.
-        throw new Error(`Failed to fetch the Python versions manifest. The response was empty, truncated, or invalid, and all retries were exhausted. ${message}`);
+        throw new Error(`Failed to fetch the Python versions manifest. The response was empty, truncated, or invalid, and all retries were exhausted. ${message}`, { cause: err });
     }
 }
 function install_python_getManifestFromRepo() {
diff --git a/src/install-python.ts b/src/install-python.ts
index ddd7a5cc..c787def7 100644
--- a/src/install-python.ts
+++ b/src/install-python.ts
@@ -222,7 +222,8 @@ export async function getManifest(): Promise<tc.IToolRelease[]> {
     const message = err instanceof Error ? err.message : String(err);
     // Fail loudly so the action doesn't exit 0 without installing Python.
     throw new Error(
-      `Failed to fetch the Python versions manifest. The response was empty, truncated, or invalid, and all retries were exhausted. ${message}`
+      `Failed to fetch the Python versions manifest. The response was empty, truncated, or invalid, and all retries were exhausted. ${message}`,
+      {cause: err}
     );
   }
 }