diff --git a/biology/unikmer/Makefile b/biology/unikmer/Makefile
index e7f5472aea25..07708cea83cc 100644
--- a/biology/unikmer/Makefile
+++ b/biology/unikmer/Makefile
@@ -1,32 +1,32 @@
 PORTNAME=	unikmer
 DISTVERSIONPREFIX=	v
-DISTVERSION=	0.18.3
+DISTVERSION=	0.18.4
 CATEGORIES=	biology
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Toolkit for nucleic acid k-mer analysis, set operations on k-mers
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 TEST_DEPENDS=	csvtk:science/csvtk
 
 USES=		go:modules
 
 GO_MODULE=	github.com/shenwei356/unikmer
 GO_TARGET=	./${PORTNAME}
 
 PLIST_FILES=	bin/${PORTNAME}
 
 TEST_USES=	perl5
 
 do-test: # from the benchmark section in README
 	@cd ${WRKSRC} && \
 		${GO_CMD} test . -bench=Bench* -benchmem \
 			| ${GREP} Bench \
 			| perl -pe 's/\s\s+/\t/g' \
 			| csvtk cut -Ht -f 1,3-5 \
 			| csvtk add-header -t -n test,time,memory,allocs \
 			| csvtk pretty -t -r
 
 .include <bsd.port.mk>
diff --git a/biology/unikmer/distinfo b/biology/unikmer/distinfo
index 45a0a5ba891a..fa2ec4660e14 100644
--- a/biology/unikmer/distinfo
+++ b/biology/unikmer/distinfo
@@ -1,5 +1,5 @@
-TIMESTAMP = 1627492000
-SHA256 (go/biology_unikmer/unikmer-v0.18.3/v0.18.3.mod) = 6ccade17e0fdfc86ebaa0683f7aab4e3c94019032e0d0f4c78bf957a2a8f9c1b
-SIZE (go/biology_unikmer/unikmer-v0.18.3/v0.18.3.mod) = 881
-SHA256 (go/biology_unikmer/unikmer-v0.18.3/v0.18.3.zip) = 11302e47c018908a9c6dfc140b9d45d744dee6d9aca36a863661d67be0262825
-SIZE (go/biology_unikmer/unikmer-v0.18.3/v0.18.3.zip) = 4271855
+TIMESTAMP = 1629820531
+SHA256 (go/biology_unikmer/unikmer-v0.18.4/v0.18.4.mod) = 956b67a0534170f141452b9756e629f91eb3fdd5dcb5fe02ad20b14cd3dceafa
+SIZE (go/biology_unikmer/unikmer-v0.18.4/v0.18.4.mod) = 881
+SHA256 (go/biology_unikmer/unikmer-v0.18.4/v0.18.4.zip) = cb2a3d4eb307b1a421243eeb9d7db217d575c0761998565a980703eeea1e19ce
+SIZE (go/biology_unikmer/unikmer-v0.18.4/v0.18.4.zip) = 4271857