diff --git a/math/imath/Makefile b/math/imath/Makefile
index cd40efd038c2..5d66f97acadb 100644
--- a/math/imath/Makefile
+++ b/math/imath/Makefile
@@ -1,6 +1,6 @@
-# $NetBSD: Makefile,v 1.10 2023/07/18 18:30:01 nia Exp $
+# $NetBSD: Makefile,v 1.11 2024/01/28 12:55:22 wiz Exp $
 
-DISTNAME=	imath-3.1.9
+DISTNAME=	imath-3.1.10
 CATEGORIES=	math
 MASTER_SITES=	${MASTER_SITE_GITHUB:=AcademySoftwareFoundation/}
 GITHUB_PROJECT=	Imath
diff --git a/math/imath/PLIST b/math/imath/PLIST
index 0350f80e7eb5..bf552c405260 100644
--- a/math/imath/PLIST
+++ b/math/imath/PLIST
@@ -1,4 +1,4 @@
-@comment $NetBSD: PLIST,v 1.8 2023/06/06 08:01:09 wiz Exp $
+@comment $NetBSD: PLIST,v 1.9 2024/01/28 12:55:22 wiz Exp $
 include/Imath/ImathBox.h
 include/Imath/ImathBoxAlgo.h
 include/Imath/ImathColor.h
@@ -40,6 +40,6 @@ lib/cmake/Imath/ImathTargets-release.cmake
 lib/cmake/Imath/ImathTargets.cmake
 lib/libImath-3_1.so
 lib/libImath-3_1.so.29
-lib/libImath-3_1.so.29.8.0
+lib/libImath-3_1.so.29.9.0
 lib/libImath.so
 lib/pkgconfig/Imath.pc
diff --git a/math/imath/distinfo b/math/imath/distinfo
index 77a1a07d796e..6561597224ae 100644
--- a/math/imath/distinfo
+++ b/math/imath/distinfo
@@ -1,5 +1,6 @@
-$NetBSD: distinfo,v 1.10 2023/06/06 08:01:09 wiz Exp $
+$NetBSD: distinfo,v 1.11 2024/01/28 12:55:22 wiz Exp $
 
-BLAKE2s (imath-3.1.9.tar.gz) = 3e37b4e025ce132b6bf9ab085751f294581e532c0097701493cea0c38719d00a
-SHA512 (imath-3.1.9.tar.gz) = ad96b2ac306fc13c01e8ea3256f885499c3f545be327feaba0f5e093b70b544bcca6f8b353fa7e35107aae515c19caced44331a95d0414f367ead4691ec73564
-Size (imath-3.1.9.tar.gz) = 598497 bytes
+BLAKE2s (imath-3.1.10.tar.gz) = 5aaf7d6b85a92c25bf1e539f4cc4ee1bbe3efc18efbe58b84f52c30cc159f8b3
+SHA512 (imath-3.1.10.tar.gz) = 6a5bcb3f31880edd266c7c5d757ce233e91dad4007f4c411c06a58494ca64517a3df22fd3491837bb8ac211c4c5f8ee679b68c0fbcf9c31c8f2d7c7bb9d253e8
+Size (imath-3.1.10.tar.gz) = 595059 bytes
+SHA1 (patch-src_Imath_ImathFun.cpp) = e85edd2fc1dd2dd5e5d799570de308aa5a12faef
diff --git a/math/imath/patches/patch-src_Imath_ImathFun.cpp b/math/imath/patches/patch-src_Imath_ImathFun.cpp
new file mode 100644
index 000000000000..92972e5ccf71
--- /dev/null
+++ b/math/imath/patches/patch-src_Imath_ImathFun.cpp
@@ -0,0 +1,40 @@
+$NetBSD: patch-src_Imath_ImathFun.cpp,v 1.1 2024/01/28 12:55:22 wiz Exp $
+
+src/Imath/ImathFun.cpp: In function 'float Imath_3_1::succf(float)':     
+src/Imath/ImathFun.cpp:13:12: error: 'isfinite' was not declared in this scope; did you mean 'std::isfinite'?                                                                            
+   13 |     return isfinite(f) ?                                                                               
+      |            ^~~~~~~~                                                                                    
+      |            std::isfinite                                                                               
+
+--- src/Imath/ImathFun.cpp.orig	2024-01-28 12:53:28.995862273 +0000
++++ src/Imath/ImathFun.cpp
+@@ -10,25 +10,25 @@ IMATH_INTERNAL_NAMESPACE_SOURCE_ENTER
+ 
+ float succf(float f) IMATH_NOEXCEPT
+ {
+-    return isfinite(f) ?
++    return std::isfinite(f) ?
+             std::nextafter(f, std::numeric_limits<float>::infinity()) : f;
+ }
+ 
+ float predf(float f) IMATH_NOEXCEPT
+ {
+-    return isfinite(f) ?
++    return std::isfinite(f) ?
+             std::nextafter(f, -std::numeric_limits<float>::infinity()) : f;
+ }
+ 
+ double succd(double d) IMATH_NOEXCEPT
+ {
+-    return isfinite(d) ?
++    return std::isfinite(d) ?
+             std::nextafter(d, std::numeric_limits<double>::infinity()) : d;
+ }
+ 
+ double predd(double d) IMATH_NOEXCEPT
+ {
+-    return isfinite(d) ?
++    return std::isfinite(d) ?
+             std::nextafter(d, -std::numeric_limits<double>::infinity()) : d;
+ }
+