diff --git a/mingw-w64-cfitsio/PKGBUILD b/mingw-w64-cfitsio/PKGBUILD
index da3a3710a7..47af867946 100644
--- a/mingw-w64-cfitsio/PKGBUILD
+++ b/mingw-w64-cfitsio/PKGBUILD
@@ -3,16 +3,20 @@
 _realname=cfitsio
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=4.6.2
-pkgrel=3
+pkgver=4.6.3
+pkgrel=1
 epoch=1
 pkgdesc="A library of C and Fortran subroutines for reading and writing data files in FITS (Flexible Image Transport System) data format (mingw-w64)"
 arch=('any')
 mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
 url="https://heasarc.gsfc.nasa.gov/fitsio/"
 msys2_repository_url='https://github.com/HEASARC/cfitsio'
+msys2_changelog_url='https://heasarc.gsfc.nasa.gov/FTP/software/fitsio/c/docs/changes.txt'
 msys2_references=(
+  'archlinux: cfitsio'
   "cpe: cpe:/a:nasa:cfitsio"
+  'cygwin: cfitsio'
+  'gentoo: sci-libs/cfitsio'
 )
 license=("spdx:CFITSIO")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cmake"
@@ -23,7 +27,7 @@ depends=("${MINGW_PACKAGE_PREFIX}-curl"
          "${MINGW_PACKAGE_PREFIX}-libwinpthread"
          "${MINGW_PACKAGE_PREFIX}-zlib")
 source=("https://heasarc.gsfc.nasa.gov/FTP/software/fitsio/c/${_realname}-${pkgver}.tar.gz")
-sha256sums=('66fd078cc0bea896b0d44b120d46d6805421a5361d3a5ad84d9f397b1b5de2cb')
+sha256sums=('fad44fff274fdda5ffcc0c0fff3bc3c596362722b9292fc8944db91187813600')
 
 prepare() {
   cd "${_realname}-${pkgver}"