diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 26af302a..490d69e2 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.0.0-alpha.110"
+  ".": "0.0.0-alpha.111"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee738fe2..c23947a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,16 @@ 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.111](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.110...v0.0.0-alpha.111) (2026-09-22)
+
+
+### Features
+
+* **language:** a model declares what it assumes of its data ([#589](https://github.com/energy-models/math-spec/issues/589)) ([e1454cf](https://github.com/energy-models/math-spec/commit/e1454cf6fac8ef1b05b80532fcc0fe6a8a4e5372))
+* **language:** a model writes its formulations out on request, and states what each assumes of its data ([#602](https://github.com/energy-models/math-spec/issues/602)) ([1e00c23](https://github.com/energy-models/math-spec/commit/1e00c23e227489d14790d85de5337b8edd584b10))
+* **language:** a where counts the coordinates a predicate admits ([#592](https://github.com/energy-models/math-spec/issues/592)) ([5cc55d3](https://github.com/energy-models/math-spec/commit/5cc55d3c145a9139672029aa257ed4935da0d79f))
+* **language:** a where may compare arithmetic over parameters ([#566](https://github.com/energy-models/math-spec/issues/566)) ([e9793bd](https://github.com/energy-models/math-spec/commit/e9793bde6e903b5783e517aeeaa1e29150d0c37c))
+
 ## [0.0.0-alpha.110](https://github.com/energy-models/math-spec/compare/v0.0.0-alpha.109...v0.0.0-alpha.110) (2026-09-21)