diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..006f7bb
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,30 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.5.1] - 2026-04-24
+
+### Changed
+
+- **MSRV bumped to `1.88`** (was `1.85`) — required by the `zip` 8.5 build-dependency in `tenderdash-proto-compiler`. Consumers of `tenderdash-proto` must build with rustc ≥ 1.88.
+- `zip` build-dependency updated from `7.0` to `8.5` in `tenderdash-proto-compiler` (#193).
+- Reference Dockerfiles bumped from `rust:1.85-*` to `rust:1.88-*`.
+
+### Fixed
+
+- `tenderdash-proto-compiler`: actionable download-hint message and stale-archive cleanup in the Tenderdash source fetch script (#188).
+- `tenderdash-abci` tests: updated `bollard` import to use `bollard::models::ContainerCreateBody` (bollard 0.20.2 dropped the re-export via `bollard::secret::*`).
+
+### CI / Build
+
+- `actions/upload-artifact` 6 → 7 (#183).
+- `docker/setup-buildx-action` 3.12.0 → 4.0.0 (#185).
+- `docker/build-push-action` 6.18.0 → 7.0.0 (#186) and 7.0.0 → 7.1.0 (#194).
+- `actions/deploy-pages` 4 → 5 (#191).
+- `actions/configure-pages` 5 → 6 (#192).
+- `actions/upload-pages-artifact` 4 → 5 (#195).
+
+[1.5.1]: https://github.com/dashpay/rs-tenderdash-abci/compare/v1.5.0...v1.5.1
diff --git a/Cargo.toml b/Cargo.toml
index 8a9e283..76854a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,5 +4,5 @@ members = ["abci", "proto-compiler", "proto"]
 
 [workspace.package]
 
-rust-version = "1.85"
-version = "1.5.0"
+rust-version = "1.88"
+version = "1.5.1"