diff --git a/devel/ruby-gettext-rails/Makefile b/devel/ruby-gettext-rails/Makefile
index e036d223d77e..4e3ad85acd10 100644
--- a/devel/ruby-gettext-rails/Makefile
+++ b/devel/ruby-gettext-rails/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.8 2018/03/18 14:21:20 taca Exp $
+# $NetBSD: Makefile,v 1.9 2019/12/25 00:17:23 joerg Exp $
 
 DISTNAME=	gettext_rails-2.1.0
 PKGNAME=	${RUBY_PKGPREFIX}-${DISTNAME:S/_/-/}
@@ -14,6 +14,7 @@ DEPENDS+=	${RUBY_PKGPREFIX}-locale-rails>=2.0.5:../../devel/ruby-locale-rails
 DEPENDS+=	${RUBY_ACTIVERECORD_DEPENDS}
 DEPENDS+=	${RUBY_RAILS_DEPENDS}
 
+RUBY_VERSIONS_INCOMPATIBLE=	24
 RUBY_RAILS_ACCEPTED=	# defined
 
 post-extract:
diff --git a/misc/ruby-sprockets-rails/Makefile b/misc/ruby-sprockets-rails/Makefile
index 0ed235624519..cb8e36d1b0c7 100644
--- a/misc/ruby-sprockets-rails/Makefile
+++ b/misc/ruby-sprockets-rails/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.3 2018/03/18 14:21:21 taca Exp $
+# $NetBSD: Makefile,v 1.4 2019/12/25 00:17:24 joerg Exp $
 
 DISTNAME=	sprockets-rails-3.2.1
 CATEGORIES=	www
@@ -13,6 +13,7 @@ DEPENDS+=	${RUBY_ACTIONPACK_DEPENDS}
 #DEPENDS+=	${RUBY_ACTIVESUPPORT_DEPENDS}
 
 RUBY_RAILS_ACCEPTED=	42
+RUBY_VERSIONS_INCOMPATIBLE=	24
 
 .include "../../lang/ruby/gem.mk"
 .include "../../mk/bsd.pkg.mk"
diff --git a/misc/ruby-sprockets/Makefile b/misc/ruby-sprockets/Makefile
index ee147fc3b824..0ad093e2cc98 100644
--- a/misc/ruby-sprockets/Makefile
+++ b/misc/ruby-sprockets/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.17 2019/11/04 15:41:00 taca Exp $
+# $NetBSD: Makefile,v 1.18 2019/12/25 00:17:23 joerg Exp $
 
 DISTNAME=	sprockets-4.0.0
 CATEGORIES=	www
@@ -12,6 +12,7 @@ DEPENDS+=	${RUBY_PKGPREFIX}-rack>=2.0<3:../../www/ruby-rack
 DEPENDS+=	${RUBY_PKGPREFIX}-concurrent-ruby>=1.0<2:../../devel/ruby-concurrent-ruby
 
 USE_LANGUAGES=	# none
+RUBY_VERSIONS_INCOMPATIBLE=	24
 
 RUBYGEM_OPTIONS+=	--format-executable
 
diff --git a/www/ruby-rails42/Makefile b/www/ruby-rails42/Makefile
index d2063863d176..1b51a39471fd 100644
--- a/www/ruby-rails42/Makefile
+++ b/www/ruby-rails42/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.8 2019/04/14 10:16:19 taca Exp $
+# $NetBSD: Makefile,v 1.9 2019/12/25 00:17:24 joerg Exp $
 
 DISTNAME=	rails-${RAILS_VERSION}
 PKGNAME=	${RUBY_PKGPREFIX}-rails${RUBY_RAILS}-${RAILS_VERSION}
@@ -21,6 +21,7 @@ DEPENDS+=	${RUBY_PKGPREFIX}-sprockets-rails-[0-9]*:../../misc/ruby-sprockets-rai
 
 CONFLICTS+=	ruby[1-9][0-9]-rails-[0-9]*
 
+RUBY_VERSIONS_INCOMPATIBLE=	24
 RUBY_RAILS_ACCEPTED=	42
 RUBY_RAILS_STRICT_DEP=	yes
 
diff --git a/www/ruby-rails51/Makefile b/www/ruby-rails51/Makefile
index 1a60b035c09a..afb8c7be37f6 100644
--- a/www/ruby-rails51/Makefile
+++ b/www/ruby-rails51/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.4 2019/04/14 10:25:59 taca Exp $
+# $NetBSD: Makefile,v 1.5 2019/12/25 00:17:24 joerg Exp $
 
 DISTNAME=	rails-${RAILS_VERSION}
 PKGNAME=	${RUBY_PKGPREFIX}-rails${RUBY_RAILS}-${RAILS_VERSION}
@@ -20,6 +20,7 @@ DEPENDS+=	${RUBY_ACTIVESUPPORT_DEPENDS}
 DEPENDS+=	${RUBY_RAILTIES_DEPENDS}
 DEPENDS+=	${RUBY_PKGPREFIX}-sprockets-rails>2.0.0*:../../misc/ruby-sprockets-rails
 
+RUBY_VERSIONS_INCOMPATIBLE=	24
 RUBY_RAILS_ACCEPTED=	51
 RUBY_RAILS_STRICT_DEP=	yes
 
diff --git a/www/ruby-rails52/Makefile b/www/ruby-rails52/Makefile
index 5c62deee9cd6..c5f20ec597b0 100644
--- a/www/ruby-rails52/Makefile
+++ b/www/ruby-rails52/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.1 2019/03/03 15:03:16 taca Exp $
+# $NetBSD: Makefile,v 1.2 2019/12/25 00:17:24 joerg Exp $
 
 DISTNAME=	rails-${RAILS_VERSION}
 PKGNAME=	${RUBY_PKGPREFIX}-rails${RUBY_RAILS}-${RAILS_VERSION}
@@ -23,6 +23,7 @@ DEPENDS+=	${RUBY_PKGPREFIX}-sprockets-rails>2.0.0:../../misc/ruby-sprockets-rail
 
 USE_LANGUAGES=	# none
 
+RUBY_VERSIONS_INCOMPATIBLE=	24
 RUBY_RAILS_ACCEPTED=	52
 RUBY_RAILS_STRICT_DEP=	yes