diff --git a/NEWS.org b/NEWS.org
index bf8cd180..372176f1 100644
--- a/NEWS.org
+++ b/NEWS.org
@@ -1,5 +1,5 @@
 #+STARTUP:showall
-* NEWS (user visible changes)
+* NEWS (user visible changes & bigger non-visible ones)
 
 * 1.5.x (unreleased, development version)
 
@@ -14,6 +14,9 @@
 
     - Optionally provide readline support for the mu server (when in tty-mode)
 
+    - Reworked the way mu generates s-expressions for mu4e; they are created
+      programmatically now instead of through string building.
+
 *** mu4e
 
     - Include maildir-shortcuts in the main-view with overall/unread counts,
diff --git a/configure.ac b/configure.ac
index 4298cd91..d166955b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 
 AC_PREREQ([2.68])
-AC_INIT([mu],[1.5.1],[https://github.com/djcb/mu/issues],[mu])
+AC_INIT([mu],[1.5.2],[https://github.com/djcb/mu/issues],[mu])
 AC_COPYRIGHT([Copyright (C) 2008-2020 Dirk-Jan C. Binnema])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([mu/mu.cc])