diff --git a/CHANGELOG.md b/CHANGELOG.md
index 194ec920..4f465870 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [5.5.0] - 2026-04-27
+
 ### Added
 - **LDAP authentication** — Optional directory login via `AUTH_METHOD=ldap` or combined `AUTH_METHOD=all` (with local + OIDC). New `LDAP_*` settings in `app/config.py`, `LDAPService` (`app/services/ldap_service.py`), login and password-reset behaviour keyed off `users.auth_provider` (`local` | `oidc` | `ldap`), admin **System Settings** LDAP panel and `POST /admin/ldap/test`, production env validation for required LDAP variables, Alembic `153_add_user_auth_provider`, and tests in `tests/test_ldap_auth.py`. Dependency: `ldap3`. Documentation: [docs/admin/configuration/LDAP_SETUP.md](docs/admin/configuration/LDAP_SETUP.md); OIDC and getting-started guides updated for `ldap` / `all`.
 
diff --git a/docs/BUILD_CONFIGURATION.md b/docs/BUILD_CONFIGURATION.md
index 7c790778..1930ade7 100644
--- a/docs/BUILD_CONFIGURATION.md
+++ b/docs/BUILD_CONFIGURATION.md
@@ -31,7 +31,7 @@ All build scripts automatically sync the version before building.
 
 **Version Code Calculation:**
 - Android version code is calculated as: `major * 10000 + minor * 100 + patch`
-- Example: Version `4.10.1` → version code `41001`
+- Example: Version `5.5.0` → version code `50500`
 
 **Build Scripts:**
 - `scripts/build-mobile.bat` (Windows)
@@ -184,7 +184,7 @@ To update the version for all applications:
    ```python
    setup(
        name='timetracker',
-       version='4.11.0',  # Update here
+       version='5.5.0',  # Update here
        ...
    )
    ```
diff --git a/setup.py b/setup.py
index 0e3276a1..5d9fd206 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@ from setuptools import setup, find_packages
 
 setup(
     name='timetracker',
-    version='5.4.0',
+    version='5.5.0',
     packages=find_packages(),
     include_package_data=True,
     package_data={