diff --git a/mu4e/meson.build b/mu4e/meson.build
index a2a22bbd7..9fb00e669 100644
--- a/mu4e/meson.build
+++ b/mu4e/meson.build
@@ -16,14 +16,20 @@
 
 
 # generate some build data for use in mu4e
+version_extra=''
+if get_option('xapian-single-threaded')
+  version_extra='-st'
+endif
+
 mu4e_meta = configure_file(
   input: 'mu4e-config.el.in',
   output: 'mu4e-config.el',
   install: true,
   install_dir: mu4e_lispdir,
   configuration: {
-      'VERSION'         : meson.project_version(),
-      'MU_DOC_DIR'      : join_paths(datadir, 'doc', 'mu'),
+      'VERSION'           : meson.project_version(),
+      'MU_VERSION_EXTRA'  : version_extra,
+      'MU_DOC_DIR'        : join_paths(datadir, 'doc', 'mu'),
     })
 
 mu4e_pkg_desc = configure_file(
diff --git a/mu4e/mu4e-config.el.in b/mu4e/mu4e-config.el.in
index 5f99db426..170b411fa 100644
--- a/mu4e/mu4e-config.el.in
+++ b/mu4e/mu4e-config.el.in
@@ -3,6 +3,9 @@
 (defconst mu4e-mu-version "@VERSION@"
   "Required mu binary version; mu4e's version must agree with this.")
 
+(defconst mu-version-extra "@MU_VERSION_EXTRA@"
+  "Suffix to version (in display).")
+
 (defconst mu4e-doc-dir "@MU_DOC_DIR@"
   "Mu4e's data-dir.")
 
diff --git a/mu4e/mu4e-main.el b/mu4e/mu4e-main.el
index ffe22a583..c52b68671 100644
--- a/mu4e/mu4e-main.el
+++ b/mu4e/mu4e-main.el
@@ -1,6 +1,6 @@
 ;;; mu4e-main.el --- The Main interface for mu4e -*- lexical-binding: t -*-
 
-;; Copyright (C) 2011-2023 Dirk-Jan C. Binnema
+;; Copyright (C) 2011-2024 Dirk-Jan C. Binnema
 
 ;; Author: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ;; Maintainer: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
@@ -299,7 +299,8 @@ Otherwise, do nothing."
          "* "
          (propertize "mu4e" 'face 'mu4e-header-key-face)
          (propertize " - mu for emacs version " 'face 'mu4e-title-face)
-         (propertize  mu4e-mu-version 'face 'mu4e-header-key-face)
+         (propertize  (concat mu4e-mu-version mu-version-extra)
+                      'face 'mu4e-header-key-face)
          "\n\n"
          (propertize "  Basics\n\n" 'face 'mu4e-title-face)
          (mu4e--main-action