diff --git a/aiidalab_widgets_base/__init__.py b/aiidalab_widgets_base/__init__.py
index af7470cf8..36459f67b 100644
--- a/aiidalab_widgets_base/__init__.py
+++ b/aiidalab_widgets_base/__init__.py
@@ -129,4 +129,4 @@ def is_running_in_jupyter():
     "viewer",
 ]
 
-__version__ = "2.3.0a1"
+__version__ = "2.3.0a2"
diff --git a/setup.cfg b/setup.cfg
index b5b886124..80b2ec9db 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -69,7 +69,7 @@ docs =
 aiidalab_widgets_base.static.styles = *.css
 
 [bumpver]
-current_version = "v2.3.0a1"
+current_version = "v2.3.0a2"
 version_pattern = "vMAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "Bump version {old_version} -> {new_version}"
 commit = True