diff --git a/INSTALL.md b/INSTALL.md
index 08a687695ec8..4634f2523ba3 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -361,6 +361,7 @@ QGIS build is tunable according to your needs. Many flags are available to activ
 * `WITH_ORACLE`: Determines whether Oracle support should be built
 * `WITH_PDAL`: Determines whether PDAL support should be built
 * `WITH_POSTGRESQL`: Determines whether POSTGRESQL support should be built
+* `WITH_PYTHON`: Determines whether Python should be built
 * `WITH_QGIS_PROCESS`: Determines whether the standalone \"qgis_process\" tool should be built
 * `WITH_QSPATIALITE`: Determines whether QSPATIALITE sql driver should be built
 * `WITH_SERVER`: Determines whether QGIS server should be built