diff --git a/src/agents/auth-profiles.chutes.test.ts b/src/agents/auth-profiles.chutes.test.ts
index f15d7fab5..6d48b2b43 100644
--- a/src/agents/auth-profiles.chutes.test.ts
+++ b/src/agents/auth-profiles.chutes.test.ts
@@ -73,8 +73,8 @@ describe("auth-profiles (chutes)", () => {
     };
     await fs.writeFile(authProfilePath, `${JSON.stringify(store)}\n`);
 
-    const fetchSpy = vi.fn(async (input: RequestInfo | URL) => {
-      const url = String(input);
+    const fetchSpy = vi.fn(async (input: string | URL) => {
+      const url = typeof input === "string" ? input : input.toString();
       if (url !== CHUTES_TOKEN_ENDPOINT)
         return new Response("not found", { status: 404 });
       return new Response(
diff --git a/src/commands/auth-choice.test.ts b/src/commands/auth-choice.test.ts
index 5705e75b9..14da2bef6 100644
--- a/src/commands/auth-choice.test.ts
+++ b/src/commands/auth-choice.test.ts
@@ -359,8 +359,8 @@ describe("applyAuthChoice", () => {
     process.env.SSH_TTY = "1";
     process.env.CHUTES_CLIENT_ID = "cid_test";
 
-    const fetchSpy = vi.fn(async (input: RequestInfo | URL) => {
-      const url = String(input);
+    const fetchSpy = vi.fn(async (input: string | URL) => {
+      const url = typeof input === "string" ? input : input.toString();
       if (url === "https://api.chutes.ai/idp/token") {
         return new Response(
           JSON.stringify({