diff --git a/graphics/pngquant/Makefile b/graphics/pngquant/Makefile
index 1a7b280a249f..9158e45509f4 100644
--- a/graphics/pngquant/Makefile
+++ b/graphics/pngquant/Makefile
@@ -1,52 +1,61 @@
 PORTNAME=	pngquant
 PORTVERSION=	2.17.0
 DISTVERSIONSUFFIX=	-src
+PORTREVISION=	1
 CATEGORIES=	graphics
 MASTER_SITES=	https://pngquant.org/
 
 MAINTAINER=	ak@FreeBSD.org
 COMMENT=	Converts 32-bit RGBA PNGs into 8-bit RGBA-palette PNGs
 WWW=		https://pngquant.org/
 
 LICENSE=	GPLv3
 LICENSE_FILE=	${WRKSRC}/COPYRIGHT
 
-LIB_DEPENDS=	libpng.so:graphics/png
+LIB_DEPENDS=	libimagequant.so:graphics/libimagequant \
+		libpng.so:graphics/png
 
 WRKSRC=		${WRKDIR}/${PORTNAME}-${PORTVERSION}
 
 USES=		cpe gmake pkgconfig
 HAS_CONFIGURE=	yes
+CONFIGURE_ARGS=	--with-libimagequant
 
 PORTDOCS=	CHANGELOG README.md
 PLIST_FILES=	bin/pngquant \
 				man/man1/pngquant.1.gz
 
-OPTIONS_DEFINE=	OPTIMIZED_FLAGS LCMS2 DEBUG DOCS
+OPTIONS_DEFINE=	OPTIMIZED_FLAGS OPENMP LCMS2 DEBUG DOCS
 OPTIONS_DEFINE_i386=	SSE
 OPTIONS_DEFINE_amd64=	SSE
 LCMS2_DESC=	Support for ICC profiles via LCMS library
 OPTIMIZED_FLAGS_DESC=	${OPTIMIZED_CFLAGS_DESC}
+OPTIONS_DEFAULT=	OPENMP
 OPTIONS_DEFAULT_amd64=	SSE
 
 DEBUG_CONFIGURE_ON=	--enable-debug
 
 LCMS2_CONFIGURE_WITH=	lcms2
 LCMS2_LIB_DEPENDS=	liblcms2.so:graphics/lcms2
 
+OPENMP_CONFIGURE_WITH=	openmp
+.if !exists(/usr/include/omp.h)
+OPENMP_USES=		compiler:gcc-c++11-lib
+.endif
+
 OPTIMIZED_FLAGS_CFLAGS=	-O3 -fstrict-aliasing \
 		-ffast-math -funroll-loops -fomit-frame-pointer \
 		-fexpensive-optimizations -ffinite-math-only \
 		-funsafe-loop-optimizations -ftree-vectorize
 
 SSE_CONFIGURE_ENABLE=sse
 
 do-install:
 	${INSTALL_PROGRAM} ${WRKSRC}/pngquant ${STAGEDIR}${PREFIX}/bin
 	${INSTALL_MAN} ${WRKSRC}/pngquant.1 ${STAGEDIR}${MANPREFIX}/man/man1
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}
 	${INSTALL_DATA} ${PORTDOCS:S|^|${WRKSRC}/|} ${STAGEDIR}${DOCSDIR}
 
 .include <bsd.port.mk>