diff --git a/devel/gcem/Makefile b/devel/gcem/Makefile
index ab704b88d698..18b497a750db 100644
--- a/devel/gcem/Makefile
+++ b/devel/gcem/Makefile
@@ -1,25 +1,25 @@
 PORTNAME=	gcem
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.17.0
+DISTVERSION=	1.18.0
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ header-only library for Generalized Constant Expression Math
 WWW=		https://gcem.readthedocs.io/en/latest/
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 USES=		cmake compiler:c++11-lang
 USE_GITHUB=	yes
 GH_ACCOUNT=	kthohr
 
 NO_ARCH=	yes
 
 do-test:
 	@cd ${BUILD_WRKSRC} && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} -DGCEM_BUILD_TESTS:BOOL=ON ${CMAKE_SOURCE_PATH} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} gcem_tests && \
 		(cd tests && ./exp.test)
 
 .include <bsd.port.mk>
diff --git a/devel/gcem/distinfo b/devel/gcem/distinfo
index cacab3d21d9e..8229dfc44e5f 100644
--- a/devel/gcem/distinfo
+++ b/devel/gcem/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1682312895
-SHA256 (kthohr-gcem-v1.17.0_GH0.tar.gz) = 74cc499e2db247c32f1ce82fc22022d22e0f0a110ecd19281269289a9e78a6f8
-SIZE (kthohr-gcem-v1.17.0_GH0.tar.gz) = 56337
+TIMESTAMP = 1714364890
+SHA256 (kthohr-gcem-v1.18.0_GH0.tar.gz) = 8e71a9f5b62956da6c409dda44b483f98c4a98ae72184f3aa4659ae5b3462e61
+SIZE (kthohr-gcem-v1.18.0_GH0.tar.gz) = 57834
diff --git a/devel/gcem/pkg-plist b/devel/gcem/pkg-plist
index 0116631a69a5..5dd9c4778d94 100644
--- a/devel/gcem/pkg-plist
+++ b/devel/gcem/pkg-plist
@@ -1,68 +1,71 @@
 include/gcem.hpp
 include/gcem_incl/abs.hpp
 include/gcem_incl/acos.hpp
 include/gcem_incl/acosh.hpp
 include/gcem_incl/asin.hpp
 include/gcem_incl/asinh.hpp
 include/gcem_incl/atan.hpp
 include/gcem_incl/atan2.hpp
 include/gcem_incl/atanh.hpp
 include/gcem_incl/beta.hpp
 include/gcem_incl/binomial_coef.hpp
 include/gcem_incl/ceil.hpp
 include/gcem_incl/copysign.hpp
 include/gcem_incl/cos.hpp
 include/gcem_incl/cosh.hpp
 include/gcem_incl/erf.hpp
 include/gcem_incl/erf_inv.hpp
 include/gcem_incl/exp.hpp
 include/gcem_incl/expm1.hpp
+include/gcem_incl/fabs.hpp
+include/gcem_incl/fabsf.hpp
+include/gcem_incl/fabsl.hpp
 include/gcem_incl/factorial.hpp
 include/gcem_incl/find_exponent.hpp
 include/gcem_incl/find_fraction.hpp
 include/gcem_incl/find_whole.hpp
 include/gcem_incl/floor.hpp
 include/gcem_incl/fmod.hpp
 include/gcem_incl/gcd.hpp
 include/gcem_incl/gcem_options.hpp
 include/gcem_incl/hypot.hpp
 include/gcem_incl/incomplete_beta.hpp
 include/gcem_incl/incomplete_beta_inv.hpp
 include/gcem_incl/incomplete_gamma.hpp
 include/gcem_incl/incomplete_gamma_inv.hpp
 include/gcem_incl/inv_sqrt.hpp
 include/gcem_incl/is_even.hpp
 include/gcem_incl/is_finite.hpp
 include/gcem_incl/is_inf.hpp
 include/gcem_incl/is_nan.hpp
 include/gcem_incl/is_odd.hpp
 include/gcem_incl/lbeta.hpp
 include/gcem_incl/lcm.hpp
 include/gcem_incl/lgamma.hpp
 include/gcem_incl/lmgamma.hpp
 include/gcem_incl/log.hpp
 include/gcem_incl/log10.hpp
 include/gcem_incl/log1p.hpp
 include/gcem_incl/log2.hpp
 include/gcem_incl/log_binomial_coef.hpp
 include/gcem_incl/mantissa.hpp
 include/gcem_incl/max.hpp
 include/gcem_incl/min.hpp
 include/gcem_incl/neg_zero.hpp
 include/gcem_incl/pow.hpp
 include/gcem_incl/pow_integral.hpp
 include/gcem_incl/quadrature/gauss_legendre_30.hpp
 include/gcem_incl/quadrature/gauss_legendre_50.hpp
 include/gcem_incl/round.hpp
 include/gcem_incl/sgn.hpp
 include/gcem_incl/signbit.hpp
 include/gcem_incl/sin.hpp
 include/gcem_incl/sinh.hpp
 include/gcem_incl/sqrt.hpp
 include/gcem_incl/tan.hpp
 include/gcem_incl/tanh.hpp
 include/gcem_incl/tgamma.hpp
 include/gcem_incl/trunc.hpp
 lib/cmake/gcem/gcemConfig.cmake
 lib/cmake/gcem/gcemConfigVersion.cmake
 lib/cmake/gcem/gcemTargets.cmake