diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index d7408df..429e474 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,5 +1,9 @@
 # Release notes
 
+## Changes from 0.3.3 to 0.3.4
+
+#XXX version-specific blurb XXX#
+
 ## Changes from 0.3.2 to 0.3.3
 
 * Change the Python extension from MODULE to SHARED on some
diff --git a/RELEASING.rst b/RELEASING.rst
index 71be655..3a07f6f 100644
--- a/RELEASING.rst
+++ b/RELEASING.rst
@@ -43,7 +43,8 @@ Tagging
 
     $ git push --tags
 
-- If you happen to have to delete the tag, such as artifacts demonstrates a fault, first delete it locally::
+- If you happen to have to delete the tag, such as artifacts demonstrates a fault,
+  first delete it locally::
 
     $ git tag --delete vX.Y.Z
 
diff --git a/blosc2_grok/__init__.py b/blosc2_grok/__init__.py
index 56dce84..ecdd4de 100644
--- a/blosc2_grok/__init__.py
+++ b/blosc2_grok/__init__.py
@@ -14,7 +14,7 @@
 import atexit
 import numpy as np
 
-__version__ = "0.3.3"
+__version__ = "0.3.4.dev0"
 
 
 class GrkFileFmt(Enum):
diff --git a/pyproject.toml b/pyproject.toml
index 0107a83..ebc9f2f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ build-backend = "scikit_build_core.build"
 
 [project]
 name = "blosc2_grok"
-version = "0.3.3"
+version = "0.3.4.dev0"
 readme = "README.md"
 authors = [
     {name = "Blosc Development Team", email = "contact@blosc.org"},