diff --git a/.age.toml b/.age.toml
new file mode 100644
index 0000000..c59992a
--- /dev/null
+++ b/.age.toml
@@ -0,0 +1,21 @@
+current_version = "0.0.0"
+
+[[files]]
+path = "pyproject.toml"
+search = "version = \"{{current_version}}\""
+replace = "version = \"{{new_version}}\""
+
+[[files]]
+path = "src/atsphinx/mini18n.py"
+search = "__version__ = \"{{current_version}}\""
+replace = "__version__ = \"{{new_version}}\""
+
+[[files]]
+path = "src/atsphinx/mini18n.py"
+search = "__version__ = \"{{current_version}}\""
+replace = "__version__ = \"{{new_version}}\""
+
+[[files]]
+path = ".github/release-body.md"
+search = "- Changelog is https://github.com/atsphinx/mini18n/blob/v{{ current_version }}/CHANGES.rst"
+replace = "- Changelog is https://github.com/atsphinx/mini18n/blob/v{{ new_version }}/CHANGES.rst"
diff --git a/.github/release-body.md b/.github/release-body.md
index 4216a62..839c19e 100644
--- a/.github/release-body.md
+++ b/.github/release-body.md
@@ -1,3 +1,3 @@
-Release atsphinx-mini18n v0.0.0
+Release update
 
 - Changelog is https://github.com/atsphinx/mini18n/blob/v0.0.0/CHANGES.rst