fixup-serial
diff --git a/test/attr/attr_implements_serial.swift b/test/attr/attr_implements_serial.swift
index d9ee6c7..b5e5583 100644
--- a/test/attr/attr_implements_serial.swift
+++ b/test/attr/attr_implements_serial.swift
@@ -3,6 +3,7 @@
// RUN: %target-swiftc_driver -module-name AttrImplFP -emit-module -emit-module-path %t/AttrImplFP.swiftmodule -emit-library -o %t/library.%target-dylib-extension %S/attr_implements_fp.swift
// RUN: %target-swiftc_driver -I %t -o %t/a.out %s %t/main.swift %t/library.%target-dylib-extension
// RUN: %target-codesign %t/a.out
+// RUN: %target-codesign %t/library.%target-dylib-extension
// RUN: %target-run %t/a.out | %FileCheck %s
// REQUIRES: executable_test
