diff --git a/bun.lock b/bun.lock
index 1a16a37698..e13d6ecab5 100644
--- a/bun.lock
+++ b/bun.lock
@@ -463,6 +463,9 @@
     "packages/sdk/js": {
       "name": "@opencode-ai/sdk",
       "version": "1.3.13",
+      "dependencies": {
+        "cross-spawn": "^7.0.6",
+      },
       "devDependencies": {
         "@hey-api/openapi-ts": "0.90.10",
         "@tsconfig/node22": "catalog:",
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index 231e8d9da6..192920a932 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -27,5 +27,7 @@
     "typescript": "catalog:",
     "@typescript/native-preview": "catalog:"
   },
-  "dependencies": {}
+  "dependencies": {
+    "cross-spawn": "^7.0.6"
+  }
 }
diff --git a/packages/sdk/js/src/server.ts b/packages/sdk/js/src/server.ts
index 174131ccfd..63a7682167 100644
--- a/packages/sdk/js/src/server.ts
+++ b/packages/sdk/js/src/server.ts
@@ -1,4 +1,4 @@
-import { spawn } from "node:child_process"
+import spawn from "cross-spawn"
 import { type Config } from "./gen/types.gen.js"
 
 export type ServerOptions = {
diff --git a/packages/sdk/js/src/v2/server.ts b/packages/sdk/js/src/v2/server.ts
index 174131ccfd..63a7682167 100644
--- a/packages/sdk/js/src/v2/server.ts
+++ b/packages/sdk/js/src/v2/server.ts
@@ -1,4 +1,4 @@
-import { spawn } from "node:child_process"
+import spawn from "cross-spawn"
 import { type Config } from "./gen/types.gen.js"
 
 export type ServerOptions = {