diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 2c6a6dd2..822009dd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.0.0-alpha.8"
+  ".": "0.0.0-alpha.9"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 13c4bb0a..a37c8c47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,13 @@ contained a literal `## [X.Y.Z]` heading, release-please inserts above the first
 `##` it finds, and so the entire release landed inside the comment and rendered
 nowhere.
 
+## [0.0.0-alpha.9](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.8...v0.0.0-alpha.9) (2026-08-23)
+
+
+### Features
+
+* position(dim) replaces index(dim, i), converting on the left ([#31](https://github.com/energy-models/math-spec/issues/31)) ([8f78ac5](https://github.com/energy-models/math-spec/commit/8f78ac54f5ff6a790cff4d4b730bb2abd27bef7c))
+
 ## [0.0.0-alpha.8](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.7...v0.0.0-alpha.8) (2026-08-23)