diff --git a/textproc/libixion/Makefile b/textproc/libixion/Makefile
index 6d283dd02618..d1e4eb39a66d 100644
--- a/textproc/libixion/Makefile
+++ b/textproc/libixion/Makefile
@@ -1,26 +1,25 @@
 PORTNAME=	libixion
-PORTVERSION=	0.17.0
-PORTREVISION=	4
+PORTVERSION=	0.18.1
 CATEGORIES=	textproc
 MASTER_SITES=	https://kohei.us/files/ixion/src/
 
 MAINTAINER=	office@FreeBSD.org
 COMMENT=	General purpose formula parser, interpreter, dependency tracker
 WWW=		https://gitlab.com/ixion/ixion
 
 LICENSE=	MPL20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-BUILD_DEPENDS=	mdds>=2.0:devel/mdds
+BUILD_DEPENDS=	mdds>=2.1:devel/mdds
 LIB_DEPENDS=	libboost_system.so:devel/boost-libs
 
 USES=		autoreconf libtool pkgconfig tar:xz
 
 GNU_CONFIGURE=	yes
 USE_LDCONFIG=	yes
 INSTALL_TARGET=	install-strip
 PLIST_SUB=	VERSION=${PORTVERSION:R}
 
 CONFIGURE_ARGS=	--disable-python
 
 .include <bsd.port.mk>
diff --git a/textproc/libixion/distinfo b/textproc/libixion/distinfo
index d5fe0c851f37..e06eff6d52a9 100644
--- a/textproc/libixion/distinfo
+++ b/textproc/libixion/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1636038855
-SHA256 (libixion-0.17.0.tar.xz) = 53c97139223f3b786d498f86512a20ee878fab0ef981947647aa116df7c4101e
-SIZE (libixion-0.17.0.tar.xz) = 499836
+TIMESTAMP = 1683410977
+SHA256 (libixion-0.18.1.tar.xz) = ec2327854601d41bd38f151bc94b47ef43f0b8258a551e41e9f5e19b9ad729c1
+SIZE (libixion-0.18.1.tar.xz) = 521024
diff --git a/textproc/libixion/pkg-plist b/textproc/libixion/pkg-plist
index 9ffc8f92db13..37355cd2af0d 100644
--- a/textproc/libixion/pkg-plist
+++ b/textproc/libixion/pkg-plist
@@ -1,37 +1,36 @@
 bin/ixion-formula-tokenizer
 bin/ixion-parser
 bin/ixion-sorter
 include/libixion-%%VERSION%%/ixion/address.hpp
 include/libixion-%%VERSION%%/ixion/address_iterator.hpp
 include/libixion-%%VERSION%%/ixion/cell.hpp
 include/libixion-%%VERSION%%/ixion/cell_access.hpp
 include/libixion-%%VERSION%%/ixion/compute_engine.hpp
 include/libixion-%%VERSION%%/ixion/config.hpp
 include/libixion-%%VERSION%%/ixion/dirty_cell_tracker.hpp
 include/libixion-%%VERSION%%/ixion/document.hpp
 include/libixion-%%VERSION%%/ixion/env.hpp
 include/libixion-%%VERSION%%/ixion/exceptions.hpp
 include/libixion-%%VERSION%%/ixion/formula.hpp
 include/libixion-%%VERSION%%/ixion/formula_function_opcode.hpp
 include/libixion-%%VERSION%%/ixion/formula_name_resolver.hpp
 include/libixion-%%VERSION%%/ixion/formula_opcode.hpp
 include/libixion-%%VERSION%%/ixion/formula_result.hpp
 include/libixion-%%VERSION%%/ixion/formula_tokens.hpp
 include/libixion-%%VERSION%%/ixion/formula_tokens_fwd.hpp
 include/libixion-%%VERSION%%/ixion/global.hpp
 include/libixion-%%VERSION%%/ixion/info.hpp
-include/libixion-%%VERSION%%/ixion/interface/formula_model_access.hpp
 include/libixion-%%VERSION%%/ixion/interface/session_handler.hpp
 include/libixion-%%VERSION%%/ixion/interface/table_handler.hpp
 include/libixion-%%VERSION%%/ixion/macros.hpp
 include/libixion-%%VERSION%%/ixion/matrix.hpp
 include/libixion-%%VERSION%%/ixion/model_context.hpp
 include/libixion-%%VERSION%%/ixion/model_iterator.hpp
 include/libixion-%%VERSION%%/ixion/module.hpp
 include/libixion-%%VERSION%%/ixion/named_expressions_iterator.hpp
 include/libixion-%%VERSION%%/ixion/table.hpp
 include/libixion-%%VERSION%%/ixion/types.hpp
 lib/libixion-%%VERSION%%.so
 lib/libixion-%%VERSION%%.so.0
 lib/libixion-%%VERSION%%.so.0.0.0
 libdata/pkgconfig/libixion-%%VERSION%%.pc