diff --git a/pyproject.toml b/pyproject.toml
index da608a26c..aa4722f33 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,47 @@ classifiers = [
 dynamic = [ "version" ]
 
 dependencies = [ "django>=4.2" ]
+
+optional-dependencies.documentation = [
+  # MkDocs to build our documentation.
+  "mkdocs==1.6",
+  # pylinkvalidator to check for broken links in documentation.
+  "pylinkvalidator==0.3",
+]
+optional-dependencies.optional = [
+  # Optional packages which may be used with REST framework.
+  "coreapi==2.3.1",
+  "coreschema==0.0.4",
+  "django-filter",
+  "django-guardian>=2.4,<2.5",
+  "inflection==0.5.1",
+  "legacy-cgi; python_version>='3.13'",
+  "markdown>=3.3.7",
+  "psycopg[binary]>=3.1.8",
+  "pygments~=2.17.0",
+  "pyyaml>=5.3.1,<5.4",
+]
+optional-dependencies.packaging = [
+  # Transifex client for managing translation resources.
+  "transifex-client",
+  # Twine for secured PyPI uploads.
+  "twine>=3.4.2,<4.0.2",
+
+  # Wheel for PyPI installs.
+  "wheel>=0.36.2,<0.40",
+
+]
+optional-dependencies.testing = [
+  # temporary pin of attrs
+  "attrs==22.1",
+  "importlib-metadata<5",
+
+  # Pytest for running the tests.
+  "pytest>=7.0.1,<8",
+  "pytest-cov>=4,<5",
+  "pytest-django>=4.5.2,<5",
+  "pytz",
+]
 urls.Changelog = "https://www.django-rest-framework.org/community/release-notes/"
 urls.Funding = "https://fund.django-rest-framework.org/topics/funding/"
 urls.Homepage = "https://www.django-rest-framework.org"
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index c3a1f1187..000000000
--- a/requirements.txt
+++ /dev/null
@@ -1,13 +0,0 @@
-# The base set of requirements for REST framework is actually
-# just Django and pytz, but for the purposes of development
-# and testing there are a number of packages that are useful
-# to install.
-
-# Laying these out as separate requirements files, allows us to
-# only included the relevant sets when running tox, and ensures
-# we are only ever declaring our dependencies in one place.
-
--r requirements/requirements-optionals.txt
--r requirements/requirements-testing.txt
--r requirements/requirements-documentation.txt
--r requirements/requirements-packaging.txt
diff --git a/requirements/requirements-documentation.txt b/requirements/requirements-documentation.txt
deleted file mode 100644
index 2cf936ef3..000000000
--- a/requirements/requirements-documentation.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-# MkDocs to build our documentation.
-mkdocs==1.6.0
-
-# pylinkvalidator to check for broken links in documentation.
-pylinkvalidator==0.3
diff --git a/requirements/requirements-optionals.txt b/requirements/requirements-optionals.txt
deleted file mode 100644
index a19e4d192..000000000
--- a/requirements/requirements-optionals.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-# Optional packages which may be used with REST framework.
-coreapi==2.3.1
-coreschema==0.0.4
-django-filter
-django-guardian>=2.4.0,<2.5
-inflection==0.5.1
-legacy-cgi; python_version>="3.13"
-markdown>=3.3.7
-psycopg[binary]>=3.1.8
-pygments~=2.17.0
-pyyaml>=5.3.1,<5.4
diff --git a/requirements/requirements-packaging.txt b/requirements/requirements-packaging.txt
deleted file mode 100644
index 81f22a35a..000000000
--- a/requirements/requirements-packaging.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# Wheel for PyPI installs.
-wheel>=0.36.2,<0.40.0
-
-# Twine for secured PyPI uploads.
-twine>=3.4.2,<4.0.2
-
-# Transifex client for managing translation resources.
-transifex-client
diff --git a/requirements/requirements-testing.txt b/requirements/requirements-testing.txt
deleted file mode 100644
index a3821a508..000000000
--- a/requirements/requirements-testing.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-# Pytest for running the tests.
-pytest>=7.0.1,<8.0
-pytest-cov>=4.0.0,<5.0
-pytest-django>=4.5.2,<5.0
-importlib-metadata<5.0
-# temporary pin of attrs
-attrs==22.1.0
-pytz  # Remove when dropping support for Django<5.0
-setuptools>=77.0.3
diff --git a/tox.ini b/tox.ini
index 6980d0bfa..936527f16 100644
--- a/tox.ini
+++ b/tox.ini
@@ -22,28 +22,24 @@ deps =
         django52: Django>=5.2,<6.0
         django60: Django>=6.0,<6.1
         djangomain: https://github.com/django/django/archive/main.tar.gz
-        -rrequirements/requirements-testing.txt
-        -rrequirements/requirements-optionals.txt
+        .[testing, optional]
 
 [testenv:base]
 ; Ensure optional dependencies are not required
 deps =
-        django<6.1
-        -rrequirements/requirements-testing.txt
+        .[testing]
 
 [testenv:dist]
 commands = python -W error::DeprecationWarning -W error::PendingDeprecationWarning runtests.py --no-pkgroot --staticfiles {posargs}
 deps =
-        django<6.1
-        -rrequirements/requirements-testing.txt
-        -rrequirements/requirements-optionals.txt
+       .[testing, optional]
 
 [testenv:docs]
 skip_install = true
 commands = mkdocs build
 deps =
-       -rrequirements/requirements-testing.txt
-       -rrequirements/requirements-documentation.txt
+      .[testing, optional]
+      
 
 [testenv:py312-djangomain]
 ignore_outcome = true