diff --git a/security/rubygem-acme-client/Makefile b/security/rubygem-acme-client/Makefile
index 217a8d30a531..5050db108bcf 100644
--- a/security/rubygem-acme-client/Makefile
+++ b/security/rubygem-acme-client/Makefile
@@ -1,23 +1,24 @@
 PORTNAME=	acme-client
 PORTVERSION=	2.0.21
+PORTREVISION=	1
 CATEGORIES=	security rubygems
 MASTER_SITES=	RG
 
 MAINTAINER=	sunpoet@FreeBSD.org
 COMMENT=	Client for the ACME protocol
 WWW=		https://github.com/unixcharles/acme-client
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE.txt
 
-RUN_DEPENDS=	rubygem-base64>=0.2.0<0.3:converters/rubygem-base64 \
+RUN_DEPENDS=	rubygem-base64>=0.2.0<1:converters/rubygem-base64 \
 		rubygem-faraday>=1.0<3.0.0:www/rubygem-faraday \
 		rubygem-faraday-retry>=1.0<3.0.0:www/rubygem-faraday-retry
 
 USES=		gem shebangfix
 
 NO_ARCH=	yes
 
 SHEBANG_FILES=	bin/setup
 
 .include <bsd.port.mk>
diff --git a/security/rubygem-acme-client/files/patch-gemspec b/security/rubygem-acme-client/files/patch-gemspec
new file mode 100644
index 000000000000..9dbce91a35a7
--- /dev/null
+++ b/security/rubygem-acme-client/files/patch-gemspec
@@ -0,0 +1,11 @@
+--- acme-client.gemspec.orig	2025-06-02 06:56:50 UTC
++++ acme-client.gemspec
+@@ -24,7 +24,7 @@ Gem::Specification.new do |s|
+   s.add_development_dependency(%q<vcr>.freeze, ["~> 2.9".freeze])
+   s.add_development_dependency(%q<webmock>.freeze, ["~> 3.8".freeze])
+   s.add_development_dependency(%q<webrick>.freeze, ["~> 1.7".freeze])
+-  s.add_runtime_dependency(%q<base64>.freeze, ["~> 0.2.0".freeze])
++  s.add_runtime_dependency(%q<base64>.freeze, ["~> 0.2".freeze])
+   s.add_runtime_dependency(%q<faraday>.freeze, [">= 1.0".freeze, "< 3.0.0".freeze])
+   s.add_runtime_dependency(%q<faraday-retry>.freeze, [">= 1.0".freeze, "< 3.0.0".freeze])
+ end