diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1944314..2aa5882 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 This project follows Semantic Versioning (SemVer).
 Breaking changes (removed tools, changed parameters) increment the major version.
 
+## [1.4.0] – 2026-04-17
+
+### Added
+- **Unit test suite** (`tests/test_unit.py`) — comprehensive tests for core modules
+  - `fw_client.py`: Error handling (top-level `ex`/`un`, nested `a00.un.un`/`a00.ex.ex`, successful responses)
+  - `recipes.py`: `ingredients_parsed` parser (newline handling, empty lines, headings, commas)
+  - `lists.py`: System list name translation (SYS-CAT-SHOPPINGLIST, SYS-CAT-TODOS, unknown names)
+  - `server.py`: `_validate_date()` (ISO YYYY-MM-DD validation, format errors)
+  - `server.py`: `_err()` helper (JSON response format, Unicode, special characters)
+- All tests use `unittest.mock` (stdlib, no external dependencies)
+- Tests run without API access; all HTTP calls are mocked
+- Framework: pytest with asyncio support
+
+### Notes
+- Run tests: `uv run pytest tests/test_unit.py -v`
+- No breaking changes; release is testing infrastructure only
+
 ## [1.3.1] – 2026-04-17
 
 ### Fixed
diff --git a/pyproject.toml b/pyproject.toml
index a1efbe4..aff6178 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mcp-familywall"
-version = "1.3.1"
+version = "1.4.0"
 description = "MCP server for Family Wall — manage your family's circles, lists, tasks, recipes, and meal plan via Claude"
 readme = "README.md"
 requires-python = ">=3.12"