diff --git a/src/agents/sandbox/ssh.spawn-env.test.ts b/src/agents/sandbox/ssh.spawn-env.test.ts
index cdb23c9c9a0..17837fa55d0 100644
--- a/src/agents/sandbox/ssh.spawn-env.test.ts
+++ b/src/agents/sandbox/ssh.spawn-env.test.ts
@@ -24,8 +24,8 @@ function createMockChildProcess(): MockChildProcess {
   return child;
 }
 
-vi.mock("node:child_process", async (importOriginal) => {
-  const actual = await importOriginal<typeof import("node:child_process")>();
+vi.mock("node:child_process", async () => {
+  const actual = await vi.importActual<typeof import("node:child_process")>("node:child_process");
   return {
     ...actual,
     spawn: spawnMock,
diff --git a/src/agents/skills-install.download.test.ts b/src/agents/skills-install.download.test.ts
index 8439f62bf74..52a95208a77 100644
--- a/src/agents/skills-install.download.test.ts
+++ b/src/agents/skills-install.download.test.ts
@@ -21,8 +21,8 @@ vi.mock("../infra/net/fetch-guard.js", () => ({
   fetchWithSsrFGuard: (...args: unknown[]) => fetchWithSsrFGuardMock(...args),
 }));
 
-vi.mock("./skills.js", async (importOriginal) => ({
-  ...(await importOriginal<typeof import("./skills.js")>()),
+vi.mock("./skills.js", async () => ({
+  ...(await vi.importActual<typeof import("./skills.js")>("./skills.js")),
   hasBinary: (bin: string) => hasBinaryMock(bin),
 }));
 
diff --git a/src/agents/tools-effective-inventory.test.ts b/src/agents/tools-effective-inventory.test.ts
index 1c94f23f1fa..5758c33d237 100644
--- a/src/agents/tools-effective-inventory.test.ts
+++ b/src/agents/tools-effective-inventory.test.ts
@@ -9,8 +9,8 @@ async function loadHarness(options?: {
   resolvedModelCompat?: Record<string, unknown>;
 }) {
   vi.resetModules();
-  vi.doMock("./agent-scope.js", async (importOriginal) => {
-    const actual = await importOriginal<typeof import("./agent-scope.js")>();
+  vi.doMock("./agent-scope.js", async () => {
+    const actual = await vi.importActual<typeof import("./agent-scope.js")>("./agent-scope.js");
     return {
       ...actual,
       resolveSessionAgentId: () => "main",