diff --git a/graphics/libpano13/Makefile b/graphics/libpano13/Makefile
index b26b160132fe..4c5796b380a5 100644
--- a/graphics/libpano13/Makefile
+++ b/graphics/libpano13/Makefile
@@ -1,36 +1,35 @@
 PORTNAME=	libpano13
-DISTVERSION=	2.9.22
-PORTREVISION=	12
+DISTVERSION=	2.9.23
 CATEGORIES=	graphics java
 MASTER_SITES=	SF/panotools/${PORTNAME}/${PORTNAME}-${DISTVERSION}
 
 MAINTAINER=	fuz@FreeBSD.org
 COMMENT=	Cross-platform library behind Panorama Tools and other photo stitchers
 WWW=		https://panotools.sourceforge.net/
 
 LICENSE=	GPLv2+
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 LIB_DEPENDS=	libpng.so:graphics/png \
 		libtiff.so:graphics/tiff
 
 USES=		cmake:testing cpe jpeg pathfix perl5 pkgconfig
 CPE_VENDOR=	${PORTNAME}_project
 USE_LDCONFIG=	yes
 USE_PERL5=	build	# for pod2man
 
 WRKSRC=		${WRKDIR}/libpano13-${DISTVERSION}
 
 OPTIONS_DEFINE=	DOCS JAVA SUITESPARSE
 OPTIONS_DEFAULT=	SUITESPARSE
 SUITESPARSE_DESC=	Use math/suitesparse for faster operation
 OPTIONS_SUB=	yes
 JAVA_USES=	java
 JAVA_CMAKE_BOOL=	SUPPORT_JAVA_PROGRAMS
 JAVA_VARS=	JAVA_OS=native
 SUITESPARSE_LIB_DEPENDS= \
 		libcholmod.so:math/suitesparse-cholmod \
 		libspqr.so:math/suitesparse-spqr
 SUITESPARSE_CMAKE_BOOL=	USE_SPARSE_LEVMAR
 
 .include <bsd.port.mk>
diff --git a/graphics/libpano13/distinfo b/graphics/libpano13/distinfo
index ad025f3de8bb..618e00c0aad7 100644
--- a/graphics/libpano13/distinfo
+++ b/graphics/libpano13/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1694462735
-SHA256 (libpano13-2.9.22.tar.gz) = affc6830cdbe71c28d2731dcbf8dea2acda6d9ffd4609c6dbf3ba0c68440a8e3
-SIZE (libpano13-2.9.22.tar.gz) = 2800628
+TIMESTAMP = 1761158946
+SHA256 (libpano13-2.9.23.tar.gz) = e7c076d37a14c39434962115e47ddbe18452ca3de5ce40e2aaefa7cf5815ea28
+SIZE (libpano13-2.9.23.tar.gz) = 2855115
diff --git a/graphics/libpano13/files/patch-CMakeLists.txt b/graphics/libpano13/files/patch-CMakeLists.txt
index d332057e3eb4..48a6646602ff 100644
--- a/graphics/libpano13/files/patch-CMakeLists.txt
+++ b/graphics/libpano13/files/patch-CMakeLists.txt
@@ -1,20 +1,20 @@
---- CMakeLists.txt.orig	2021-12-06 23:34:35 UTC
+--- CMakeLists.txt.orig	2025-10-05 12:06:18 UTC
 +++ CMakeLists.txt
-@@ -333,7 +333,7 @@ INSTALL(
+@@ -325,7 +325,7 @@ INSTALL(
  	AUTHORS
  	COPYING
  	README
 -  DESTINATION "share/pano13/doc"
 +  DESTINATION "share/doc/libpano13"
    COMPONENT headers
          )
  INSTALL(
-@@ -342,7 +342,7 @@ INSTALL(
+@@ -334,7 +334,7 @@ INSTALL(
          doc/PTblender.readme
          doc/PTmender.readme
          doc/stitch.txt
 -  DESTINATION "share/pano13/doc"
 +  DESTINATION "share/doc/libpano13"
    COMPONENT doc
          )
  
diff --git a/graphics/libpano13/files/patch-filter.h b/graphics/libpano13/files/patch-filter.h
deleted file mode 100644
index c06e64103687..000000000000
--- a/graphics/libpano13/files/patch-filter.h
+++ /dev/null
@@ -1,24 +0,0 @@
---- filter.h.orig	2025-10-04 23:10:13 UTC
-+++ filter.h
-@@ -511,8 +511,8 @@ typedef		void (*intFunc)( unsigned char *dst, 	unsigne
- // Interpolating functions for resampler
- 
- typedef		void (*intFunc)( unsigned char *dst, 	unsigned char **rgb,
--							register double Dx, 
--							register double Dy,
-+							double Dx, 
-+							double Dy,
- 							int color, int SamplesPerPixel);
- 
- // Filter function type for anti aliasing Filter
-@@ -747,8 +747,8 @@ PANO13_IMPEX int	getVRPanoOptions	( VRPanoOptions *v, 
- PANO13_IMPEX int 	readAdjust		( aPrefs *p,  fullPath* sfile, int insert, sPrefs *sP );
- PANO13_IMPEX void 	readControlPoints	(char* script, controlPoint *c );
- PANO13_IMPEX int	getVRPanoOptions	( VRPanoOptions *v, char *line );
--PANO13_IMPEX void 	nextWord			( register char* word, char** ch );
--PANO13_IMPEX void 	nextLine			( register char* line, char** ch );
-+PANO13_IMPEX void 	nextWord			( char* word, char** ch );
-+PANO13_IMPEX void 	nextLine			( char* line, char** ch );
- PANO13_IMPEX int 	numLines			( char* script, char first );
- 
- PANO13_IMPEX char *panoParserFindOLine(char *script, int index);