diff --git a/src/resources/asdf/asdf.ts b/src/resources/asdf/asdf.ts
index 0e14f2d6..d1342607 100644
--- a/src/resources/asdf/asdf.ts
+++ b/src/resources/asdf/asdf.ts
@@ -92,7 +92,14 @@ export class AsdfResource extends Resource<AsdfConfig> {
         await CoreUtils.installViaPkgMgr('curl');
       }
 
-      const { data: latestVersion } = await $.spawn('curl -s https://api.github.com/repos/asdf-vm/asdf/releases/latest | grep \'"tag_name":\' | sed -E \'s/.*"([^"]+)".*/\\1/\'');
+      // Extract latest version from GitHub's /releases/latest redirect — avoids API rate limits
+      const { data: locationData } = await $.spawn(
+        "curl -sI https://github.com/asdf-vm/asdf/releases/latest | grep -i 'location:' | sed 's|.*/tag/||' | tr -d '\\r\\n'"
+      );
+      const latestVersion = locationData.trim();
+      if (!latestVersion) {
+        throw new Error('Failed to determine the latest asdf version from GitHub. Check network connectivity.');
+      }
 
       // Create .asdf directory if it doesn't exist
       const asdfDir = path.join(os.homedir(), '.local', 'bin');
diff --git a/test/asdf/asdf-install.test.ts b/test/asdf/asdf-install.test.ts
index 52909c18..2a0c17e2 100644
--- a/test/asdf/asdf-install.test.ts
+++ b/test/asdf/asdf-install.test.ts
@@ -34,7 +34,8 @@ describe('Asdf install tests', async () => {
       validateDestroy: async () => {
         expect(await testSpawn('which asdf')).toMatchObject({ status: SpawnStatus.ERROR });
         expect(await testSpawn('which deno')).toMatchObject({ status: SpawnStatus.ERROR });
-        expect(await testSpawn('which go')).toMatchObject({ status: SpawnStatus.ERROR });
+        // Check the asdf shim is gone rather than `which go` — system Go may be pre-installed on the runner
+        expect(await testSpawn('test -f ~/.asdf/shims/go')).toMatchObject({ status: SpawnStatus.ERROR });
       }
     });
 
@@ -59,7 +60,8 @@ describe('Asdf install tests', async () => {
       },
       validateDestroy: async () => {
         expect(await testSpawn('which asdf')).toMatchObject({ status: SpawnStatus.ERROR });
-        expect(await testSpawn('which go')).toMatchObject({ status: SpawnStatus.ERROR });
+        // Check the asdf shim is gone rather than `which go` — system Go may be pre-installed on the runner
+        expect(await testSpawn('test -f ~/.asdf/shims/go')).toMatchObject({ status: SpawnStatus.ERROR });
       }
     });
   })