diff --git a/setup.cfg b/setup.cfg
index 7e644a6d5..06f187089 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,7 +27,7 @@ install_requires =
     aiida-core~=2.2,<3
     Jinja2~=3.0
     aiida-quantumespresso~=4.3.0
-    aiidalab-widgets-base==2.1.0b0
+    aiidalab-widgets-base==2.1.0rc0
     aiida-pseudo~=1.4
     filelock~=3.8
     importlib-resources~=5.2