GraphicsMagick 1.3.31 is now available. It resolves 49 additional issues (security problems and bugs) discovered by Google's oss-fuzz project so the software is more resistent to harm caused by corrupt files or malware. Support was added for Zstd and WebP compression in TIFF files using the latest libtiff release. All users are recommended to upgrade to this release as soon as possible, particularly if untrusted files may be opened.