diff --git a/CHANGES.rst b/CHANGES.rst
index d2c5654..278214e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -8,7 +8,7 @@ Changes
 Version 6
 #########
 
-6.0.dev0 (unreleased)
+6.0.dev0 (2023-12-29)
 ~~~~~~~~~~~~~~~~~~~~~
 
 - No visible changes with respect to v5, apart from the support for new/revised syntaxes of
diff --git a/pglast/__init__.py b/pglast/__init__.py
index 5ff4f46..75a0e7f 100644
--- a/pglast/__init__.py
+++ b/pglast/__init__.py
@@ -18,7 +18,7 @@
 
 
 # This is injected automatically at release time
-__version__ = 'v5.7'
+__version__ = 'v6.0.dev0'
 "Package's version."
 
 __author__ = 'Lele Gaifax <lele@metapensiero.it>'