diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index d33c03b..6edfbe1 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 0.1.2 - 2026-03-25
 
 ### Added
 
diff --git a/pyproject.toml b/pyproject.toml
index 5d5e395..353e61c 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "ellphi"
-version = "0.1.2.dev1"
+version = "0.1.2"
 description = "Fast ellipse tangency solver"
 authors = [
   { name = "Tomoki Uda", email = "tomoki.uda@gmail.com" }
diff --git a/src/ellphi/_version.py b/src/ellphi/_version.py
index cae11f2..e793082 100644
--- a/src/ellphi/_version.py
+++ b/src/ellphi/_version.py
@@ -1,3 +1,3 @@
 """Canonical package version."""
 
-__version__ = "0.1.2.dev1"
+__version__ = "0.1.2"