diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index a9462d65..9a6b0109 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.39.0
+current_version = 0.40.0
 commit = True
 tag = False
 message = chore: Bump version from {current_version} to {new_version}
diff --git a/HISTORY.md b/HISTORY.md
index 243d7015..14e8df0d 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,5 +1,16 @@
 # History
 
+## 0.40.0 (2025-01-08)
+
+- (PR #748, 2025-01-06) Use most recent patch version of Python in CI/CD configuration
+- (PR #750, 2025-01-08) Really use latest patch version of Python in CI/CD configuration
+- (PR #751, 2025-01-08) Improve dependency caching in CI/CD configuration
+- (PR #749, 2025-01-08) deps: Update dependency constraints of Python package `cl-sii`
+- (PR #747, 2025-01-08) chore: Bump the production-dependencies group with 3 updates
+- (PR #737, 2025-01-08) chore(deps): Bump setuptools from 70.3.0 to 75.3.0
+- (PR #745, 2025-01-08) chore(deps): Bump pydantic from 2.10.3 to 2.10.4
+- (PR #746, 2025-01-08) chore(deps): Bump the development-dependencies group with 6 updates
+
 ## 0.39.0 (2024-12-12)
 
 - (PR #729, 2024-10-30) extras: Fix serialization of `None` in Pydantic `Rut` type
diff --git a/src/cl_sii/__init__.py b/src/cl_sii/__init__.py
index ed0d0720..dd586b4a 100644
--- a/src/cl_sii/__init__.py
+++ b/src/cl_sii/__init__.py
@@ -4,4 +4,4 @@
 
 """
 
-__version__ = '0.39.0'
+__version__ = '0.40.0'