diff --git a/CHANGES b/CHANGES
index 74b2d9bc1..8ceb350d9 100644
--- a/CHANGES
+++ b/CHANGES
@@ -7,12 +7,18 @@ To install the unreleased libtmux version, see [developmental releases](https://
 ```console
 $ pip install --user --upgrade --pre libtmux
 ```
+
 ## libtmux 0.25.x (unreleased)
 
 - _Notes on upcoming releases will be added here_
 
 <!-- Maintainers and contributors: Insert change notes for the next release above -->
 
+### Packaging
+
+- Remove `requirements/` folder, which was unused and deprecated by
+  pyproject.toml (#507)
+
 ## libtmux 0.24.0 (2023-11-19)
 
 _Maintenance only, no bug fixes or new features_
diff --git a/requirements/dev.txt b/requirements/dev.txt
deleted file mode 100644
index 1b6470493..000000000
--- a/requirements/dev.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-isort
-flake8
-twine
diff --git a/requirements/doc.txt b/requirements/doc.txt
deleted file mode 100644
index 55042dc72..000000000
--- a/requirements/doc.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-docutils>=0.14
-sphinx>=4.0.0
-sphinx_issues==1.2.0
-alagitpull>=0.6.0
diff --git a/requirements/test.txt b/requirements/test.txt
deleted file mode 100644
index 755c43c77..000000000
--- a/requirements/test.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-pytest
-pytest-cov
-coverage