diff --git a/math/nanoflann/Makefile b/math/nanoflann/Makefile
index fbc54f0282df..3d17db5c63fe 100644
--- a/math/nanoflann/Makefile
+++ b/math/nanoflann/Makefile
@@ -1,39 +1,39 @@
 PORTNAME=	nanoflann
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.5.4
+DISTVERSION=	1.5.5
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Header-only library for Nearest Neighbor (NN) search with KD-trees
 WWW=		https://github.com/jlblancoc/nanoflann
 
 LICENSE=	BSD2CLAUSE
 LICENSE_FILE=	${WRKSRC}/COPYING
 
 USES=		cmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	jlblancoc
 
 CMAKE_OFF=	NANOFLANN_BUILD_EXAMPLES NANOFLANN_BUILD_TESTS
 
 NO_ARCH=	yes
 
 PLIST_FILES=	include/nanoflann.hpp \
 		libdata/pkgconfig/nanoflann.pc \
 		share/cmake/nanoflann/nanoflannConfig.cmake \
 		share/cmake/nanoflann/nanoflannConfigVersion.cmake \
 		share/cmake/nanoflann/nanoflannTargets.cmake
 
 do-test:
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DNANOFLANN_BUILD_TESTS=ON ${CMAKE_SOURCE_PATH} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} test
 
 benchmarks: build # benchmarks fail to run: https://github.com/jlblancoc/nanoflann/issues/100
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DBUILD_BENCHMARKS=ON ${CMAKE_SOURCE_PATH} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} benchmarks
 
 .include <bsd.port.mk>
diff --git a/math/nanoflann/distinfo b/math/nanoflann/distinfo
index 9a6406cdd74c..5da366767838 100644
--- a/math/nanoflann/distinfo
+++ b/math/nanoflann/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1704956767
-SHA256 (jlblancoc-nanoflann-v1.5.4_GH0.tar.gz) = a7f64d0bdff42614c561e52680b16de46c0edac9719f21f935c5e1f8b0654afc
-SIZE (jlblancoc-nanoflann-v1.5.4_GH0.tar.gz) = 521670
+TIMESTAMP = 1712160577
+SHA256 (jlblancoc-nanoflann-v1.5.5_GH0.tar.gz) = fd28045eabaf0e7f12236092f80905a1750e0e6b580bb40eadd64dc4f75d641d
+SIZE (jlblancoc-nanoflann-v1.5.5_GH0.tar.gz) = 521762