diff --git a/math/gsl/Makefile b/math/gsl/Makefile
index 05d1ea205de3..b55ca74b70f4 100644
--- a/math/gsl/Makefile
+++ b/math/gsl/Makefile
@@ -1,6 +1,5 @@
 PORTNAME=	gsl
-PORTVERSION=	2.7.1
-PORTREVISION=	1
+PORTVERSION=	2.8
 CATEGORIES=	math
 MASTER_SITES=	GNU
 
@@ -13,7 +12,6 @@ LICENSE=	GPLv3
 USES=		libtool pathfix
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
-GNU_CONFIGURE_MANPREFIX=${PREFIX}/share
 INSTALL_TARGET=	install-strip
 
 INFO=		gsl-ref
diff --git a/math/gsl/distinfo b/math/gsl/distinfo
index 2f07ea823373..a4c32599b80e 100644
--- a/math/gsl/distinfo
+++ b/math/gsl/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1638423135
-SHA256 (gsl-2.7.1.tar.gz) = dcb0fbd43048832b757ff9942691a8dd70026d5da0ff85601e52687f6deeb34b
-SIZE (gsl-2.7.1.tar.gz) = 7509209
+TIMESTAMP = 1768505160
+SHA256 (gsl-2.8.tar.gz) = 6a99eeed15632c6354895b1dd542ed5a855c0f15d9ad1326c6fe2b2c9e423190
+SIZE (gsl-2.8.tar.gz) = 8997136
diff --git a/math/gsl/pkg-plist b/math/gsl/pkg-plist
index 27de4acb4456..7f89ba2966e3 100644
--- a/math/gsl/pkg-plist
+++ b/math/gsl/pkg-plist
@@ -155,6 +155,7 @@ include/gsl/gsl_roots.h
 include/gsl/gsl_rstat.h
 include/gsl/gsl_sf.h
 include/gsl/gsl_sf_airy.h
+include/gsl/gsl_sf_alf.h
 include/gsl/gsl_sf_bessel.h
 include/gsl/gsl_sf_clausen.h
 include/gsl/gsl_sf_coulomb.h
@@ -269,15 +270,15 @@ include/gsl/gsl_wavelet2d.h
 include/gsl/test_source.c
 lib/libgsl.a
 lib/libgsl.so
-lib/libgsl.so.27
-lib/libgsl.so.27.0.0
+lib/libgsl.so.28
+lib/libgsl.so.28.0.0
 lib/libgslcblas.a
 lib/libgslcblas.so
 lib/libgslcblas.so.0
 lib/libgslcblas.so.0.0.0
 libdata/pkgconfig/gsl.pc
+share/aclocal/gsl.m4
 share/man/man1/gsl-config.1.gz
 share/man/man1/gsl-histogram.1.gz
 share/man/man1/gsl-randist.1.gz
 share/man/man3/gsl.3.gz
-share/aclocal/gsl.m4