diff --git a/misc/rubygem-dotenv-rails-rails50/Makefile b/misc/rubygem-dotenv-rails-rails50/Makefile
index 866dca8f2a3f..78a5a5927ae3 100644
--- a/misc/rubygem-dotenv-rails-rails50/Makefile
+++ b/misc/rubygem-dotenv-rails-rails50/Makefile
@@ -12,11 +12,14 @@ WWW=		https://github.com/bkeepers/dotenv
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-RUN_DEPENDS=	rubygem-dotenv2>=${PORTVERSION}:misc/rubygem-dotenv2 \
+RUN_DEPENDS=	rubygem-dotenv2>=${PORTVERSION}<${PORTVERSION}_99:misc/rubygem-dotenv2 \
 		rubygem-railties50>=3.2:www/rubygem-railties50
 
 USES=		gem
 
 NO_ARCH=	yes
 
+# dotenv-rails 3.0.0+ requires Rails 6.1+
+PORTSCOUT=	limit:^2\.
+
 .include <bsd.port.mk>