diff --git a/devel/py-openapi-schema-validator/Makefile b/devel/py-openapi-schema-validator/Makefile
index 3e05919c8841..a25454e0ea89 100644
--- a/devel/py-openapi-schema-validator/Makefile
+++ b/devel/py-openapi-schema-validator/Makefile
@@ -1,28 +1,33 @@
 PORTNAME=	openapi-schema-validator
 PORTVERSION=	0.8.1
 CATEGORIES=	devel python
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 DISTNAME=	openapi_schema_validator-${PORTVERSION}
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	OpenAPI schema validation for Python
 WWW=		https://github.com/python-openapi/openapi-schema-validator
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}poetry-core>=1.0.0:devel/py-poetry-core@${PY_FLAVOR}
 RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}jsonschema>=4.19.1<5:devel/py-jsonschema@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}jsonschema-specifications>=2024.10.1:devel/py-jsonschema-specifications@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pydantic2>=2.0.0<3:devel/py-pydantic2@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pydantic-settings>=2.0.0<3:devel/py-pydantic-settings@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}referencing>=0.37.0<0.38:devel/py-referencing@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}rfc3339-validator>=0:devel/py-rfc3339-validator@${PY_FLAVOR}
 
 USES=		python
 USE_PYTHON=	autoplist concurrent pep517
 
 NO_ARCH=	yes
 
+OPTIONS_DEFINE=	ECMA_REGEX
+ECMA_REGEX_DESC=ECMA regular expressions support
+
+ECMA_REGEX_RUN_DEPENDS=	${PYTHON_PKGNAMEPREFIX}regress>=2025.10.1:devel/py-regress@${PY_FLAVOR}
+
 .include <bsd.port.mk>