diff --git a/.readthedocs.yml b/.readthedocs.yml
index 850d79c4a1..cc698548db 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,4 +1,6 @@
 version: 2
 python:
   install:
-  - requirements: docs/requirements.txt
+  - path: .
+    extra_requirements:
+      - docs
diff --git a/docs/requirements.txt b/docs/requirements.txt
deleted file mode 100644
index bf408839e8..0000000000
--- a/docs/requirements.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-# keep these in sync with setup.cfg
-sphinx
-jaraco.packaging>=6.1
-rst.linker>=1.9
-pygments-github-lexers==0.0.5
-sphinx-inline-tabs@git+https://github.com/pradyunsg/sphinx-inline-tabs@main
-
-setuptools>=34
diff --git a/setup.cfg b/setup.cfg
index 1b0e618807..05ddf01dae 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -72,10 +72,10 @@ docs =
 	sphinx
 	jaraco.packaging >= 8.2
 	rst.linker >= 1.9
-	sphinx-inline-tabs
 
 	# local
 	pygments-github-lexers==0.0.5
+	sphinx-inline-tabs@git+https://github.com/pradyunsg/sphinx-inline-tabs@main
 
 ssl =
 	wincertstore==0.2; sys_platform=='win32'