diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 10f15273..e03133db 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.0.0-alpha.86"
+  ".": "0.0.0-alpha.87"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e7d449e..4a6845d7 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.87](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.86...v0.0.0-alpha.87) (2026-09-14)
+
+
+### Features
+
+* **language:** a variable, a constraint and a cased expression declare their shape as dims, as a parameter does ([#429](https://github.com/energy-models/math-spec/issues/429)) ([d8dfdb0](https://github.com/energy-models/math-spec/commit/d8dfdb01fcffdf2190a73875f73ed266635dc15a))
+
 ## [0.0.0-alpha.86](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.85...v0.0.0-alpha.86) (2026-09-11)