diff --git a/src/router/worker-env.ts b/src/router/worker-env.ts
index 134699d0..f611583e 100644
--- a/src/router/worker-env.ts
+++ b/src/router/worker-env.ts
@@ -42,6 +42,9 @@ export async function extractProjectIdFromJob(data: CascadeJob): Promise<string
 		const project = await findProjectByRepo(jobData.repoFullName);
 		return project?.id ?? null;
 	}
+	if (jobData.type === 'sentry') {
+		return jobData.projectId ?? null;
+	}
 	if (jobData.type === 'manual-run' || jobData.type === 'debug-analysis') {
 		return jobData.projectId ?? null;
 	}
diff --git a/tests/unit/router/worker-env.test.ts b/tests/unit/router/worker-env.test.ts
index e4d2964e..0d4e5499 100644
--- a/tests/unit/router/worker-env.test.ts
+++ b/tests/unit/router/worker-env.test.ts
@@ -84,6 +84,23 @@ describe('extractProjectIdFromJob', () => {
 		expect(await extractProjectIdFromJob(job)).toBe('proj-jira');
 	});
 
+	it('returns projectId for sentry jobs', async () => {
+		// Regression: prior to this branch, sentry jobs hit the `return null`
+		// fall-through, so the worker-env builder skipped credential loading
+		// entirely. The first real sentry-bound agent run in prod (cascade
+		// project, 2026-05-06) crashed on boot with "CREDENTIAL_MASTER_KEY is
+		// not set" because no CASCADE_CREDENTIAL_KEYS reached the worker.
+		const job = {
+			type: 'sentry',
+			source: 'sentry',
+			projectId: 'proj-sentry',
+			eventType: 'event_alert',
+			payload: {},
+			receivedAt: '2026-05-06T12:48:09Z',
+		} as unknown as CascadeJob;
+		expect(await extractProjectIdFromJob(job)).toBe('proj-sentry');
+	});
+
 	it('returns projectId resolved from repo for github jobs', async () => {
 		const job = { type: 'github', repoFullName: 'owner/repo' } as CascadeJob;
 		mockFindProjectByRepo.mockResolvedValue({ id: 'proj-gh' } as never);