diff --git a/.readthedocs.yml b/.readthedocs.yml
index 24e25c3..2cd1f45 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,14 +5,20 @@
 # Required
 version: 2
 
+build:
+    os: "ubuntu-22.04"
+    tools:
+        python: "3.10"
+
 # Build documentation in the doc/ directory with Sphinx
 sphinx:
     configuration: doc/conf.py
 
 # Optionally build your docs in additional formats such as PDF and ePub
-formats: all
+# formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-    version: 3
-    # system_packages: true
+    install:
+        - requirements: doc/rtd-requirements.txt
+
diff --git a/doc/rtd-requirements.txt b/doc/rtd-requirements.txt
new file mode 100644
index 0000000..8e0f639
--- /dev/null
+++ b/doc/rtd-requirements.txt
@@ -0,0 +1,4 @@
+setuptools>60
+Sphinx>6,<7
+sphinx-rtd-theme>1
+urllib3<2