diff --git a/CHANGELOG.md b/CHANGELOG.md
index cdd2ff033..9cdd68175 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,13 @@ CLI command and its behaviour. There are no guarantees of stability for the
 
 <!-- protokolo-section-tag -->
 
+## 4.0.3 - 2024-07-08
+
+### Fixed
+
+- Increased the minimum requirement of `attrs` to `>=21.3`. Older versions do
+  not import correctly. (#1044)
+
 ## 4.0.2 - 2024-07-03
 
 ### Fixed
diff --git a/pyproject.toml b/pyproject.toml
index 271bc06cf..02c3df14b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@
 
 [tool.poetry]
 name = "reuse"
-version = "4.0.2"
+version = "4.0.3"
 description = "reuse is a tool for compliance with the REUSE recommendations."
 authors = [
     "Free Software Foundation Europe <contact@fsfe.org>",
@@ -103,7 +103,7 @@ requires = ["poetry-core>=1.1.0"]
 build-backend = "poetry.core.masonry.api"
 
 [bumpver]
-current_version = "v4.0.2"
+current_version = "v4.0.3"
 version_pattern = "vMAJOR.MINOR.PATCH[PYTAGNUM]"
 commit_message = "Bump version: {old_version} → {new_version}"
 tag_message = "{new_version}"
diff --git a/src/reuse/__init__.py b/src/reuse/__init__.py
index 1696d0e11..a08f14266 100644
--- a/src/reuse/__init__.py
+++ b/src/reuse/__init__.py
@@ -31,7 +31,7 @@
     __version__ = version("reuse")
 except PackageNotFoundError:
     # package is not installed
-    __version__ = "4.0.2"
+    __version__ = "4.0.3"
 
 __author__ = "Carmen Bianca Bakker"
 __email__ = "carmenbianca@fsfe.org"