diff --git a/CHANGELOG.md b/CHANGELOG.md
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@@ -1,3 +1,16 @@
+## 0.9.0 (2026-02-02)
+
+### BREAKING CHANGES
+* The types of some model class fields are extended from `Optional[int]` to `Optional[int | FormatString]`, so downstream code
+  that relies on those types can fail type checking.
+
+### Features
+* Implement [FEATURE_BUNDLE_1 RFC 0004](https://github.com/OpenJobDescription/openjd-specifications/blob/mainline/rfcs/0004-enhanced-limits-and-capabilities.md), increasing limits
+  for job parameter counts and name lengths, enabling format strings in integer properties, providing control over embedded file line endings, and adding syntax sugar
+  to simplify templates that run simple scripts with common interpreters ([`86f79ee`](https://github.com/OpenJobDescription/openjd-model-for-python/commit/86f79ee823ff15f4385b59d3e7b5224241963d50))
+
+
+
 ## 0.8.7 (2025-12-29)