diff --git a/lib/std/child_process.zig b/lib/std/child_process.zig
index a5c69c904a5ef98036ab0b18ba33f1046d21d4b7..287fc3e7cd57c32a302dfa27368c4ccb5a0d50d9 100644
--- a/lib/std/child_process.zig
+++ b/lib/std/child_process.zig
@@ -401,7 +401,7 @@ pub const ChildProcess = struct {
                 // end with eventfd
                 break :blk [2]os.fd_t{ fd, fd };
             } else {
-                break :blk try os.pipe();
+                break :blk try os.pipe2(os.O_CLOEXEC);
             }
         };
         errdefer destroyPipe(err_pipe);