diff --git a/.readthedocs.yml b/.readthedocs.yml
index 9da4ebc..d963b25 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -13,11 +13,11 @@ build:
 
 python:
    install:
-      - requirements: docs/requirements_for_rtd.txt
       - method: pip
         path: .
         extra_requirements:
            - 'bz'
+           - 'docs'
 
 sphinx:
    configuration: 'docs/source/conf.py'
diff --git a/docs/requirements_for_rtd.txt b/docs/requirements_for_rtd.txt
deleted file mode 100644
index d170e1a..0000000
--- a/docs/requirements_for_rtd.txt
+++ /dev/null
@@ -1 +0,0 @@
-setuptools>41
diff --git a/pyproject.toml b/pyproject.toml
index e81b849..d2645f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,6 +48,9 @@ dev = [
     "prospector==1.11.0",
     "pytest==7.3.1",
 ]
+docs = [
+    "sphinx~=7.1.0",
+]
 
 [tool.ruff.format]
 quote-style = 'single'