diff --git a/math/Imath/Makefile b/math/Imath/Makefile
index ac1341f1eb20a..9fa9739117894 100644
--- a/math/Imath/Makefile
+++ b/math/Imath/Makefile
@@ -1,7 +1,7 @@
 # Based on the graphics/ilmbase port that was done by: nork@FreeBSD.org
 
 PORTNAME=	Imath
-PORTVERSION=	3.1.8
+PORTVERSION=	3.1.9
 PORTREVISION=	0
 CATEGORIES=	math devel graphics
 
@@ -11,7 +11,7 @@ WWW=		https://github.com/AcademySoftwareFoundation/Imath/
 
 LICENSE=	BSD3CLAUSE
 
-USES=		cmake compiler:c++14-lang pkgconfig
+USES=		cmake compiler:c++14-lang pathfix pkgconfig
 
 USE_GITHUB=	yes
 GH_TUPLE=	AcademySoftwareFoundation:Imath:v${PORTVERSION}
@@ -42,8 +42,8 @@ PYTHON_USES=		python
 PYTHON_CMAKE_BOOL=	PYTHON
 
 _MAJORVER=	3_1
-_VER=		31
-_MINVER=	0
+_VER=		29
+_MINVER=	8
 _PLVER=		0
 
 post-patch:
diff --git a/math/Imath/distinfo b/math/Imath/distinfo
index 9977c13d3cc50..f9da02d60398a 100644
--- a/math/Imath/distinfo
+++ b/math/Imath/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1684943634
-SHA256 (AcademySoftwareFoundation-Imath-3.1.8-v3.1.8_GH0.tar.gz) = a23a4e2160ca8ff68607a4e129e484edd1d0d13f707394d32af7aed659020803
-SIZE (AcademySoftwareFoundation-Imath-3.1.8-v3.1.8_GH0.tar.gz) = 598165
+TIMESTAMP = 1685734514
+SHA256 (AcademySoftwareFoundation-Imath-3.1.9-v3.1.9_GH0.tar.gz) = f1d8aacd46afed958babfced3190d2d3c8209b66da451f556abd6da94c165cf3
+SIZE (AcademySoftwareFoundation-Imath-3.1.9-v3.1.9_GH0.tar.gz) = 598497