diff --git a/tests/integration/hooks.test.js b/tests/integration/hooks.test.js
index 19fab86..eb6083e 100644
--- a/tests/integration/hooks.test.js
+++ b/tests/integration/hooks.test.js
@@ -58,9 +58,10 @@ function runHookWithInput(scriptPath, input = {}, env = {}, timeoutMs = 10000) {
     proc.stdout.on('data', data => stdout += data);
     proc.stderr.on('data', data => stderr += data);
 
-    // Ignore EPIPE errors (process may exit before we finish writing)
+    // Ignore EPIPE/EOF errors (process may exit before we finish writing)
+    // Windows uses EOF instead of EPIPE for closed pipe writes
     proc.stdin.on('error', (err) => {
-      if (err.code !== 'EPIPE') {
+      if (err.code !== 'EPIPE' && err.code !== 'EOF') {
         reject(err);
       }
     });