diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 306accc8..376905ed 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -115,7 +115,7 @@ As a maintainer, follow these steps:
 9. Create a `new release <https://github.com/skops-dev/skops/releases>`_ on
    GitHub
 10. Update the patch version of the package to a new dev version, e.g. from
-   ``v0.3.0`` to ``v0.3.dev1``
+   ``v0.3.dev0`` to ``v0.4.dev0``
 11. Check that the new stable branch of documentation was built correctly on
     `readthedocs <https://readthedocs.org/projects/skops/builds/>`_, and make
     sure all relevant releases are *active*.
diff --git a/skops/__init__.py b/skops/__init__.py
index a343cea6..2c46541d 100644
--- a/skops/__init__.py
+++ b/skops/__init__.py
@@ -16,7 +16,7 @@
 # Dev branch marker is: 'X.Y.dev' or 'X.Y.devN' where N is an integer.
 # 'X.Y.dev0' is the canonical version of 'X.Y.dev'
 #
-__version__ = "0.3.dev0"
+__version__ = "0.6.dev0"
 
 try:
     # This variable is injected in the __builtins__ by the build