diff --git a/src/evohomeasync/__init__.py b/src/evohomeasync/__init__.py
index a3fea5c..15bd1e6 100644
--- a/src/evohomeasync/__init__.py
+++ b/src/evohomeasync/__init__.py
@@ -17,4 +17,4 @@
     RequestFailed,
 )
 
-__version__ = "0.4.20"
+__version__ = "0.4.21"
diff --git a/src/evohomeasync2/__init__.py b/src/evohomeasync2/__init__.py
index 8be3fdb..cd65319 100644
--- a/src/evohomeasync2/__init__.py
+++ b/src/evohomeasync2/__init__.py
@@ -25,4 +25,4 @@
 from .location import Location  # noqa: F401
 from .zone import Zone  # noqa: F401
 
-__version__ = "0.4.20"
+__version__ = "0.4.21"