diff --git a/configure.ac b/configure.ac
index c2001b61..496012e7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,9 +3,9 @@ m4_define([weston_minor_version], [0])
 m4_define([weston_micro_version], [90])
 m4_define([weston_version],
           [weston_major_version.weston_minor_version.weston_micro_version])
-m4_define([libweston_major_version], [5])
+m4_define([libweston_major_version], [6])
 m4_define([libweston_minor_version], [0])
-m4_define([libweston_patch_version], [90])
+m4_define([libweston_patch_version], [0])
 
 AC_PREREQ([2.64])
 AC_INIT([weston],
diff --git a/meson.build b/meson.build
index 12fa7433..356ae1de 100644
--- a/meson.build
+++ b/meson.build
@@ -10,7 +10,7 @@ project('weston',
 	license: 'MIT/Expat',
 )
 
-libweston_major = 5
+libweston_major = 6
 
 # libweston_revision is manufactured to follow the autotools build's
 # library file naming, thanks to libtool