diff --git a/aiida_cp2k/__init__.py b/aiida_cp2k/__init__.py
index efc9d6b..631195d 100644
--- a/aiida_cp2k/__init__.py
+++ b/aiida_cp2k/__init__.py
@@ -6,6 +6,6 @@
 ###############################################################################
 """The official AiiDA plugin for CP2K."""
 
-__version__ = "2.0.0"
+__version__ = "2.1.0b0"
 
 # EOF
diff --git a/pyproject.toml b/pyproject.toml
index 316ebce..37dfdbf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -74,7 +74,7 @@ filterwarnings = [
 ]
 
 [tool.bumpver]
-current_version = "v2.0.0"
+current_version = "v2.1.0b0"
 version_pattern = "vMAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "Bump version {old_version} -> {new_version}."
 commit = true