diff --git a/devel/rubygem-gitlab-sdk/Makefile b/devel/rubygem-gitlab-sdk/Makefile
index 429a05dcde62..b9d0a635ba1b 100644
--- a/devel/rubygem-gitlab-sdk/Makefile
+++ b/devel/rubygem-gitlab-sdk/Makefile
@@ -1,20 +1,26 @@
 PORTNAME=	gitlab-sdk
 PORTVERSION=	0.2.5
+PORTREVISION=	1
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	mfechner@FreeBSD.org
 COMMENT=	Client side Ruby SDK for GitLab Application services
 WWW=		https://gitlab.com/gitlab-org/analytics-section/product-analytics/gl-application-sdk-rb
 
 LICENSE=	MIT
 
 RUN_DEPENDS=	rubygem-activesupport70>=3.0:devel/rubygem-activesupport70 \
 		rubygem-rake>=13.0<14:devel/rubygem-rake \
 		rubygem-snowplow-tracker>=0.8.0<0.9:devel/rubygem-snowplow-tracker
 
 USES=		gem
 
 NO_ARCH=	yes
 
+# problem is reported upstream:
+# https://gitlab.com/gitlab-org/analytics-section/product-analytics/gl-application-sdk-rb/-/issues/5
+post-extract:
+	${CHMOD} -R o-w ${WRKSRC}
+
 .include <bsd.port.mk>