release: bump version to 1.20.4
diff --git a/configure.ac b/configure.ac
index 89c947c..373a1f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@
 
 m4_define([mm_major_version], [1])
 m4_define([mm_minor_version], [20])
-m4_define([mm_micro_version], [3])
+m4_define([mm_micro_version], [4])
 m4_define([mm_version],
           [mm_major_version.mm_minor_version.mm_micro_version])
 
diff --git a/meson.build b/meson.build
index e1f9497..8cddf77 100644
--- a/meson.build
+++ b/meson.build
@@ -3,7 +3,7 @@
 
 project(
   'ModemManager', 'c',
-  version: '1.20.3',
+  version: '1.20.4',
   license: 'GPL2',
   default_options: [
     'buildtype=debugoptimized',