diff --git a/dev-libs/ixion/ixion0.20-0.20.0.recipe b/dev-libs/ixion/ixion0.20-0.20.0.recipe
index 26c768864..bb49a851f 100644
--- a/dev-libs/ixion/ixion0.20-0.20.0.recipe
+++ b/dev-libs/ixion/ixion0.20-0.20.0.recipe
@@ -10,15 +10,16 @@ a partial calculation of only the affected cells need to be calculated."
 HOMEPAGE="https://gitlab.com/ixion/ixion"
 COPYRIGHT="Kohei Yoshida et al."
 LICENSE="MPL v2.0"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://gitlab.com/ixion/ixion/-/archive/$portVersion/ixion-$portVersion.tar.bz2"
 CHECKSUM_SHA256="39e54cd486fed458c2a6e83a5e658d4c2e818862355b33645bb1342449428463"
 SOURCE_DIR="ixion-$portVersion"
+PATCHES="boost190.patch"
 
 ARCHITECTURES="all !x86_gcc2"
 SECONDARY_ARCHITECTURES="x86"
 
-boostMinimumVersion=1.88.0
+boostMinimumVersion=1.90.0
 
 commandBinDir=$binDir
 commandSuffix=$secondaryArchSuffix
@@ -37,7 +38,6 @@ REQUIRES="
 	haiku$secondaryArchSuffix
 	lib:libboost_filesystem$secondaryArchSuffix
 	lib:libboost_program_options$secondaryArchSuffix
-	lib:libboost_system$secondaryArchSuffix
 	lib:libz$secondaryArchSuffix
 	"
 
@@ -47,7 +47,7 @@ PROVIDES_devel="
 	"
 REQUIRES_devel="
 	ixion0.20$secondaryArchSuffix == $portVersion base
-	devel:libboost_system$secondaryArchSuffix
+	devel:libboost_filesystem$secondaryArchSuffix
 	"
 
 PROVIDES_tools="
@@ -65,11 +65,15 @@ CONFLICTS_tools="
 	ixion0.18${secondaryArchSuffix}_tools
 	"
 
+ARCHITECTURES_doc="any"
+PROVIDES_doc="
+	ixion0.20_doc
+	"
+
 BUILD_REQUIRES="
 	haiku${secondaryArchSuffix}_devel
 	devel:libboost_filesystem$secondaryArchSuffix >= $boostMinimumVersion
 	devel:libboost_program_options$secondaryArchSuffix >= $boostMinimumVersion
-	devel:libboost_system$secondaryArchSuffix >= $boostMinimumVersion
 	devel:libz$secondaryArchSuffix
 	devel:libspdlog$secondaryArchSuffix
 	devel:mdds >= 3.0
@@ -118,9 +122,9 @@ INSTALL()
 	make install
 
 	# documentation
-	docdir="$developDir/documentation/ixion${portVersion%.*}"
+	docdir="$documentationDir/packages/orcus${portVersion%.*}"
 	mkdir -p $docdir
-	cp -r doc/_doxygen/html $docdir
+	cp -r doc/_doxygen/html/* $docdir
 
 	rm -f "$libDir"/libixion-$soVersion.la
 
@@ -132,6 +136,9 @@ INSTALL()
 
 	packageEntries tools \
 		"$commandBinDir"
+
+	packageEntries doc \
+		$documentationDir
 }
 
 TEST()
diff --git a/dev-libs/ixion/patches/boost190.patch b/dev-libs/ixion/patches/boost190.patch
new file mode 100644
index 000000000..f1c5cc45e
--- /dev/null
+++ b/dev-libs/ixion/patches/boost190.patch
@@ -0,0 +1,35 @@
+From bfe5ab6adadda265d575fec9c192e6f53f2ef9f5 Mon Sep 17 00:00:00 2001
+From: Kohei Yoshida <kohei.yoshida@gmail.com>
+Date: Fri, 4 Apr 2025 21:08:55 -0400
+Subject: [PATCH] Update boost.m4 from the latest upstream
+
+---
+ m4/boost.m4 | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/m4/boost.m4 b/m4/boost.m4
+index 706035d3..342516e4 100644
+--- a/m4/boost.m4
++++ b/m4/boost.m4
+@@ -1332,11 +1332,16 @@ BOOST_DEFUN([String_Algo],
+ # --------------------------------
+ # Look for Boost.System.  For the documentation of PREFERRED-RT-OPT, see the
+ # documentation of BOOST_FIND_LIB above.  This library was introduced in Boost
+-# 1.35.0.
++# 1.35.0 and is header only since 1.70.
+ BOOST_DEFUN([System],
+-[BOOST_FIND_LIB([system], [$1],
++[
++if test $boost_major_version -ge 170; then
++  BOOST_FIND_HEADER([boost/system/error_code.hpp])
++else
++  BOOST_FIND_LIB([system], [$1],
+                 [boost/system/error_code.hpp],
+                 [boost::system::error_code e; e.clear();], [], [], [$2])
++fi
+ ])# BOOST_SYSTEM
+ 
+ 
+-- 
+GitLab
+