diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 077300e..70b779c 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -7,7 +7,7 @@ serialize =
 	{major}.{minor}.{patch}
 	{major}.{minor}.{patch}.{qualifier}
 	{major}.{minor}.{patch}.{qualifier}{qn}
-current_version = 1.0.0.dev0
+current_version = 1.0.0.alpha21
 
 [bumpversion:part:qualifier]
 optional_value = dev
diff --git a/setup.py b/setup.py
index 6791314..54ca43b 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name="aioremootio",
-    version="1.0.0.dev0",
+    version="1.0.0.alpha21",
     description="An asynchronous API client library for Remootio (http://www.remootio.com/)",
     long_description=long_description,
     long_description_content_type="text/markdown",