diff --git a/CHANGELOG.md b/CHANGELOG.md
index dcf06df..9a5c294 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## 0.12.0 (UNRELEASED)
+## 0.12.0 (2024-02-05)
 
 - Fixed `graphql-transport-ws` protocol implementation not waiting for the `connection_ack` message on new connection.
 - Fixed `get_client_settings` mutating `config_dict` instance.
diff --git a/pyproject.toml b/pyproject.toml
index 5430769..620c5ab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 name = "ariadne-codegen"
 description = "Generate fully typed GraphQL client from schema, queries and mutations!"
 authors = [{ name = "Mirumee Software", email = "hello@mirumee.com" }]
-version = "0.11.0"
+version = "0.12.0"
 readme = "README.md"
 license = { file = "LICENSE" }
 classifiers = [