diff --git a/INSTALL b/INSTALL
index c83e3f3b..8e263637 100644
--- a/INSTALL
+++ b/INSTALL
@@ -541,7 +541,7 @@ XZ Utils Installation
                         no      Disable sandboxing support.
 
                         capsicum
-                                Use Capsicum (FreeBSD >= 10) for
+                                Use Capsicum (FreeBSD >= 10.2) for
                                 sandboxing. If no Capsicum support
                                 is found, configure will give an error.
 
@@ -549,6 +549,11 @@ XZ Utils Installation
                                 sandboxing. If pledge(2) isn't found,
                                 configure will give an error.
 
+                        landlock
+                                Use Landlock (Linux >= 5.13) for
+                                sandboxing. If no Landlock support
+                                is found, configure will give an error.
+
     --enable-symbol-versions
                 Use symbol versioning for liblzma. This is enabled by
                 default on GNU/Linux, other GNU-based systems, and