diff --git a/converters/p5-Sereal-Decoder/Makefile b/converters/p5-Sereal-Decoder/Makefile
index 6c00f92b9bb3..6d7b584fb4da 100644
--- a/converters/p5-Sereal-Decoder/Makefile
+++ b/converters/p5-Sereal-Decoder/Makefile
@@ -1,26 +1,7 @@
 # $FreeBSD$
 
 PORTNAME=	Sereal-Decoder
-PORTVERSION=	4.011
-CATEGORIES=	converters perl5
-MASTER_SITES=	CPAN
-MASTER_SITE_SUBDIR=	CPAN:YVES
-PKGNAMEPREFIX=	p5-
-
-MAINTAINER=	adamw@FreeBSD.org
 COMMENT=	Perl module for fast, powerful binary deserialization (decoder)
 
-LICENSE=	ART10 GPLv1+
-LICENSE_COMB=	dual
-
-TEST_DEPENDS=	p5-Test-LongString>0:devel/p5-Test-LongString \
-		p5-Test-Warn>=0:devel/p5-Test-Warn
-
-USES=		perl5
-USE_PERL5=	configure
-MAKE_JOBS_UNSAFE=	yes
-
-post-install:
-	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${SITE_ARCH_REL}/auto/Sereal/Decoder/Decoder.so
-
-.include <bsd.port.mk>
+SLAVE_PORT=	yes
+.include "${.CURDIR}/../p5-Sereal/Makefile"
diff --git a/converters/p5-Sereal-Decoder/distinfo b/converters/p5-Sereal-Decoder/distinfo
index 83fe23e34893..8d3760e96188 100644
--- a/converters/p5-Sereal-Decoder/distinfo
+++ b/converters/p5-Sereal-Decoder/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1580821611
-SHA256 (Sereal-Decoder-4.011.tar.gz) = a4c84d387321b09e0287ecb26b8034c06cd1e11f9992e7ca0a2daddd46192731
-SIZE (Sereal-Decoder-4.011.tar.gz) = 676210
+TIMESTAMP = 1591909829
+SHA256 (Sereal-Decoder-4.012.tar.gz) = 39bbd9bc2cba5ed1c9efe5c14a740949ca1251fcbbd494080d21b8e8ff33732f
+SIZE (Sereal-Decoder-4.012.tar.gz) = 676405
diff --git a/converters/p5-Sereal-Encoder/Makefile b/converters/p5-Sereal-Encoder/Makefile
index 1e7e33d0b656..10ddb2c5c149 100644
--- a/converters/p5-Sereal-Encoder/Makefile
+++ b/converters/p5-Sereal-Encoder/Makefile
@@ -1,27 +1,7 @@
 # $FreeBSD$
 
 PORTNAME=	Sereal-Encoder
-PORTVERSION=	4.011
-CATEGORIES=	converters perl5
-MASTER_SITES=	CPAN
-MASTER_SITE_SUBDIR=	CPAN:YVES
-PKGNAMEPREFIX=	p5-
-
-MAINTAINER=	adamw@FreeBSD.org
 COMMENT=	Perl module for fast, powerful binary serialization (encoder)
 
-LICENSE=	ART10 GPLv1+
-LICENSE_COMB=	dual
-
-TEST_DEPENDS=	p5-Test-Deep>0:devel/p5-Test-Deep \
-		p5-Test-LongString>0:devel/p5-Test-LongString \
-		p5-Test-Warn>0:devel/p5-Test-Warn
-
-USES=		perl5
-USE_PERL5=	configure
-MAKE_JOBS_UNSAFE=	yes
-
-post-install:
-	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${SITE_ARCH_REL}/auto/Sereal/Encoder/Encoder.so
-
-.include <bsd.port.mk>
+SLAVE_PORT=	yes
+.include "${.CURDIR}/../p5-Sereal/Makefile"
diff --git a/converters/p5-Sereal-Encoder/distinfo b/converters/p5-Sereal-Encoder/distinfo
index 46ac3b866e94..37f8c6160121 100644
--- a/converters/p5-Sereal-Encoder/distinfo
+++ b/converters/p5-Sereal-Encoder/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1580821636
-SHA256 (Sereal-Encoder-4.011.tar.gz) = a753876d8c4208d7c72ba3f745a7ebc6913245992a011e38ac44542a9cb73461
-SIZE (Sereal-Encoder-4.011.tar.gz) = 685284
+TIMESTAMP = 1591909688
+SHA256 (Sereal-Encoder-4.012.tar.gz) = b34c18d9bc07554be5ea83b609b2f08d26c6148b7198826921086d5e1ecedf94
+SIZE (Sereal-Encoder-4.012.tar.gz) = 685506
diff --git a/converters/p5-Sereal/Makefile b/converters/p5-Sereal/Makefile
index f3e6b9e3573b..948db7fb26b1 100644
--- a/converters/p5-Sereal/Makefile
+++ b/converters/p5-Sereal/Makefile
@@ -1,27 +1,40 @@
 # $FreeBSD$
 
-PORTNAME=	Sereal
-PORTVERSION=	4.011
+PORTNAME?=	Sereal
+PORTVERSION=	4.012
 CATEGORIES=	converters perl5
 MASTER_SITES=	CPAN
 MASTER_SITE_SUBDIR=	CPAN:YVES
 PKGNAMEPREFIX=	p5-
 
 MAINTAINER=	adamw@FreeBSD.org
-COMMENT=	Perl extension for fast, compact, powerful binary (de-)serialization
+COMMENT?=	Perl extension for fast, compact, powerful binary (de-)serialization
 
 LICENSE=	ART10 GPLv1+
 LICENSE_COMB=	dual
 
-BUILD_DEPENDS=	${RUN_DEPENDS}
-RUN_DEPENDS=	p5-Sereal-Decoder>=${PORTVERSION}:converters/p5-Sereal-Decoder \
-		p5-Sereal-Encoder>=${PORTVERSION}:converters/p5-Sereal-Encoder
 TEST_DEPENDS=	p5-Test-Deep>=0:devel/p5-Test-Deep \
 		p5-Test-LongString>=0:devel/p5-Test-LongString \
 		p5-Test-Warn>=0:devel/p5-Test-Warn
 
 USES=		perl5
 USE_PERL5=	configure
+MAKE_JOBS_UNSAFE=	yes
+
+.if empty(SLAVE_PORT)
+BUILD_DEPENDS=	${RUN_DEPENDS}
+RUN_DEPENDS=	p5-Sereal-Decoder>=${PORTVERSION}:converters/p5-Sereal-Decoder \
+		p5-Sereal-Encoder>=${PORTVERSION}:converters/p5-Sereal-Encoder
+
 NO_ARCH=	yes
 
+.else
+LIB_DEPENDS=	libzstd.so:archivers/zstd
+
+MAKE_ENV+=	PASTHRU_DEFINE="-I${LOCALBASE}/include"
+
+post-install:
+	${STRIP_CMD} ${STAGEDIR}${PREFIX}/${SITE_ARCH_REL}/auto/Sereal/${PORTNAME:C/Sereal-//}/*.so
+.endif
+
 .include <bsd.port.mk>
diff --git a/converters/p5-Sereal/distinfo b/converters/p5-Sereal/distinfo
index 7549d80420e0..78077da4b1e6 100644
--- a/converters/p5-Sereal/distinfo
+++ b/converters/p5-Sereal/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1580821658
-SHA256 (Sereal-4.011.tar.gz) = 5bb8a1c43f03cf0024fb53d866fb3bcbd741544ff0cc3a65f91e0c174d400003
-SIZE (Sereal-4.011.tar.gz) = 195514
+TIMESTAMP = 1591910142
+SHA256 (Sereal-4.012.tar.gz) = 25d6229c79f4e6bcaae10cfd7c0d7f01b5df5a82ef4f15a3ed6935af59c0195a
+SIZE (Sereal-4.012.tar.gz) = 195586