1 files changed, 3 insertions, 2 deletions

diff --git a/doc/snac.8 b/doc/snac.8
index 997845a..3a4bfcf 100644
--- a/doc/snac.8
+++ b/doc/snac.8
@@ -249,9 +249,10 @@ from it are rejected until the lock expires (default: 5 retries).
 The number of seconds a blocked IP address is ignored in login attempts
 (default: 300 seconds).
 .It Ic disable_sandbox
-This boolean toggle allows disabling sandboxing (for Linux or OpenBSD). Confining a
+This boolean toggle allows disabling Linux Landlock sandboxing. Confining a
 program in a sandbox limits the directories and resources it can use, so it's
-recommended for security.
+recommended for security. Support for Linux sandboxing must be compiled in, and you
+need at least a Linux kernel version 5.13.0.
 .It Ic max_public_entries
 The maximum number of entries (posts) to be returned in user RSS feeds and outboxes
 (default: 20).