GRASS GIS 7.8.6 released

What’s new in a nutshell

Landsat 8 scenes downloaded and imported with i.landsat toolset showing the historic drought of Parana River in Argentina (2014 right - 2021 left)

As a follow-up to the previous GRASS GIS 7.8.5 we have published the new release GRASS GIS 7.8.6 with more than 145 fixes and improvements. This minor release offers new t.downgrade module that allows to downgrade the version of space time datasets created with GRASS development version. Importantly, this release comes with a critical bugfix: the addon extension manager has been updated to match new addon repository structure which solves issues found when installing addons in UNIX-like systems. Also r.external module received major speed-up.

The overview of new features in the 7.8 release series is available at new features in GRASS GIS 7.8. See also our detailed announcement with the full list of changes and bugs fixed at

Binaries/Installer download:

Source code download:

First time users may explore the first steps tutorial after installation.


The Geographic Resources Analysis Support System (, commonly referred to as GRASS GIS, is an Open Source Geographic Information System providing powerful raster, vector and geospatial processing capabilities. It can be used either as a stand-alone application or as backend for other software packages such as QGIS and R geostatistics or in the cloud. It is distributed freely under the terms of the GNU General Public License (GPL). GRASS GIS is a founding member of the Open Source Geospatial Foundation (OSGeo).

The GRASS Development Team, Oct 2021