diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index b513594..d7b0706 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,7 +1,7 @@
 Release Notes
 =============
 
-v1.0.0-alpha.x
+v1.0.0-alpha.12
 ---------------
 
 ## New features
diff --git a/pyproject.toml b/pyproject.toml
index 6ce236f..bc4745a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "openassetio-mediacreation"
-version = "1.0.0a11"
+version = "1.0.0a12"
 requires-python = ">=3.10"
 dependencies = ["openassetio>=1.0.0b2"]