diff --git a/doc/040_backup.rst b/doc/040_backup.rst
index f1f355c53..b53ae8d09 100644
--- a/doc/040_backup.rst
+++ b/doc/040_backup.rst
@@ -704,6 +704,7 @@ environment variables. The following lists these environment variables:
     RESTIC_TLS_CLIENT_CERT              Location of TLS client certificate and private key (replaces --tls-client-cert)
     RESTIC_CACHE_DIR                    Location of the cache directory
     RESTIC_COMPRESSION                  Compression mode (only available for repository format version 2)
+    RESTIC_HOST                         Only consider snapshots for this host / Set the hostname for the snapshot manually (replaces --host)
     RESTIC_PROGRESS_FPS                 Frames per second by which the progress bar is updated
     RESTIC_PACK_SIZE                    Target size for pack files
     RESTIC_READ_CONCURRENCY             Concurrency for file reads