diff --git a/man/rules/meson.build b/man/rules/meson.build
index a15a30f67a..ef11525ef2 100644
--- a/man/rules/meson.build
+++ b/man/rules/meson.build
@@ -637,7 +637,8 @@ manpages = [
    'sd_journal_open_directory',
    'sd_journal_open_directory_fd',
    'sd_journal_open_files',
-   'sd_journal_open_files_fd'],
+   'sd_journal_open_files_fd',
+   'sd_journal_open_namespace'],
   ''],
  ['sd_journal_print',
   '3',
diff --git a/man/sd_journal_open.xml b/man/sd_journal_open.xml
index 9884beae1a..bdece26ccc 100644
--- a/man/sd_journal_open.xml
+++ b/man/sd_journal_open.xml
@@ -22,6 +22,7 @@
     <refname>sd_journal_open_directory_fd</refname>
     <refname>sd_journal_open_files</refname>
     <refname>sd_journal_open_files_fd</refname>
+    <refname>sd_journal_open_namespace</refname>
     <refname>sd_journal_close</refname>
     <refname>sd_journal</refname>
     <refname>SD_JOURNAL_LOCAL_ONLY</refname>