diff --git a/devel/rubygem-json-schema-gitlab/Makefile b/devel/rubygem-json-schema-gitlab/Makefile
index 0979792551ab..8d57e82b9b7b 100644
--- a/devel/rubygem-json-schema-gitlab/Makefile
+++ b/devel/rubygem-json-schema-gitlab/Makefile
@@ -1,21 +1,22 @@
 PORTNAME=	json-schema
 PORTVERSION=	5.2.2
+PORTREVISION=	1
 CATEGORIES=	devel rubygems
 MASTER_SITES=	RG
 PKGNAMESUFFIX=	-gitlab
 
 MAINTAINER=	mfechner@FreeBSD.org
 COMMENT=	Ruby JSON schema validator
 WWW=		https://github.com/ruby-json-schema/json-schema
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 RUN_DEPENDS=	rubygem-addressable>=2.8<3:www/rubygem-addressable \
-		rubygem-bigdecimal>=3.1<4:math/rubygem-bigdecimal
+		rubygem-bigdecimal>=3.1<5:math/rubygem-bigdecimal
 
 USES=		gem
 
 NO_ARCH=	yes
 
 .include <bsd.port.mk>
diff --git a/devel/rubygem-json-schema-gitlab/files/patch-gemspec b/devel/rubygem-json-schema-gitlab/files/patch-gemspec
new file mode 100644
index 000000000000..38fb16774913
--- /dev/null
+++ b/devel/rubygem-json-schema-gitlab/files/patch-gemspec
@@ -0,0 +1,10 @@
+--- json-schema.gemspec.orig	2025-12-29 04:13:58 UTC
++++ json-schema.gemspec
+@@ -26,6 +26,6 @@ Gem::Specification.new do |s|
+   s.add_development_dependency(%q<voxpupuli-rubocop>.freeze, ["~> 3.1.0".freeze])
+   s.add_development_dependency(%q<webmock>.freeze, ["~> 3.23".freeze])
+   s.add_runtime_dependency(%q<addressable>.freeze, ["~> 2.8".freeze])
+-  s.add_runtime_dependency(%q<bigdecimal>.freeze, ["~> 3.1".freeze])
++  s.add_runtime_dependency(%q<bigdecimal>.freeze, [">= 3.1".freeze, "< 5".freeze])
+ end
+