diff --git a/CHANGELOG.md b/CHANGELOG.md
index b09a59a..e4c4137 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # Changelog for aiotelegraf
 
-## 0.4.0 (20XX-XX-XX)
+## 0.4.0 (2020-03-30)
+
+- Better Python 3.7+ support
 
 ## 0.3.0 (2020-03-30)
 
diff --git a/pyproject.toml b/pyproject.toml
index 537c217..b7cbc65 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ skip = ".eggs,.venv,venv"
 
 [tool.poetry]
 name = "aiotelegraf"
-version = "0.4.0-alpha.0"
+version = "0.4.0"
 description = "AsyncIO Python client for sending metrics to Telegraf"
 authors = [
     "Nikita Grishko <gr1n@protonmail.com>"