diff --git a/src/cli-ux/prompt.ts b/src/cli-ux/prompt.ts
index 0befdb805..afed56bc4 100644
--- a/src/cli-ux/prompt.ts
+++ b/src/cli-ux/prompt.ts
@@ -36,7 +36,8 @@ function normal(options: IPromptConfig, retries = 100): Promise<string> {
       output: process.stdout,
     })
     let timeout: NodeJS.Timeout
-    if (options.timeout) {
+    // Only set the timeout if the input is a TTY
+    if (options.timeout && options.isTTY) {
       timeout = setTimeout(() => ac.abort(), options.timeout)
       signal.addEventListener(
         'abort',
diff --git a/test/cli-ux/prompt.test.ts b/test/cli-ux/prompt.test.ts
index 387be7dca..1afe3922b 100644
--- a/test/cli-ux/prompt.test.ts
+++ b/test/cli-ux/prompt.test.ts
@@ -33,7 +33,7 @@ describe('prompt', () => {
     expect(answer).to.equal('answer')
   })
 
-  it('should not require input', async () => {
+  it('should not require input if required = false', async () => {
     stubReadline([''])
     const answer = await ux.prompt('Require input?', {required: false})
     expect(answer).to.equal('')
@@ -45,6 +45,17 @@ describe('prompt', () => {
     expect(answer).to.equal('default')
   })
 
+  it('should timeout after provided timeout', async () => {
+    stubReadline([''])
+    sandbox.stub(process, 'stdin').value({isTTY: true})
+    try {
+      await ux.prompt('Require input?', {timeout: 10})
+      expect.fail('should have thrown')
+    } catch (error: any) {
+      expect(error.message).to.equal('Prompt timeout')
+    }
+  })
+
   it('should confirm with y', async () => {
     stubReadline(['y'])
     const answer = await ux.confirm('yes/no?')