diff --git a/aiidalab_widgets_base/__init__.py b/aiidalab_widgets_base/__init__.py
index a116f68b0..93e3b35d1 100644
--- a/aiidalab_widgets_base/__init__.py
+++ b/aiidalab_widgets_base/__init__.py
@@ -116,4 +116,4 @@ def is_running_in_jupyter():
     "viewer",
 ]
 
-__version__ = "2.1.0b1"
+__version__ = "2.1.0rc0"
diff --git a/setup.cfg b/setup.cfg
index f660e81bc..cbd06dd6f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -78,7 +78,7 @@ exclude =
     docs/source/conf.py
 
 [bumpver]
-current_version = "v2.1.0b1"
+current_version = "v2.1.0rc0"
 version_pattern = "vMAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "Bump version {old_version} -> {new_version}"
 commit = True