diff --git a/configure.ac b/configure.ac
index b3dc5d2cae5e561b05d7aace2f0dd24530be56db..498fa084e61bbf13993298baa942fa6d9a769a69 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
 
 AC_PREREQ([2.69])
-AC_INIT([cm],[0.4.2],[andreas.enge@inria.fr])
+AC_INIT([cm],[0.4.3dev],[andreas.enge@inria.fr])
 AC_CONFIG_AUX_DIR([config])
 AC_CONFIG_SRCDIR([lib/cm.h])
 AC_CONFIG_HEADERS([config.h])
diff --git a/doc/version.texi b/doc/version.texi
index b36d7113f19b30f795253f18d998a15b7791e5fa..1df514b7acf7d9cb716726ff4e9298ea0455905a 100644
--- a/doc/version.texi
+++ b/doc/version.texi
@@ -1,4 +1,4 @@
-@set UPDATED 16 May 2023
+@set UPDATED 17 May 2023
 @set UPDATED-MONTH May 2023
-@set EDITION 0.4.2
-@set VERSION 0.4.2
+@set EDITION 0.4.3dev
+@set VERSION 0.4.3dev
diff --git a/lib/cm.h b/lib/cm.h
index ba0b9e026b41e17d2adfb2c08704e3ec0c237f71..b9dea11b4396b2bbf1dd43145c243cd786dd8684 100644
--- a/lib/cm.h
+++ b/lib/cm.h
@@ -33,8 +33,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 #define CM_VERSION_MAJOR      0
 #define CM_VERSION_MINOR      4
-#define CM_VERSION_PATCHLEVEL 2
-#define CM_VERSION_STRING     "0.4.2"
+#define CM_VERSION_PATCHLEVEL 3
+#define CM_VERSION_STRING     "0.4.3dev"
 
 #define CM_MODPOL_J           'j'
 #define CM_MODPOL_DOUBLEETA   'd'
diff --git a/lib/get_version.c b/lib/get_version.c
index 9fbe11de3da4d20930d6654ba43865117cbe90c7..85f9e841999f61a5f2c8fcad869d48b0f629dc13 100644
--- a/lib/get_version.c
+++ b/lib/get_version.c
@@ -23,6 +23,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 #include "cm-impl.h"
 
 const char *cm_get_version (void) {
-  return "0.4.2";
+  return "0.4.3dev";
 }