diff --git a/.readthedocs.requirements.txt b/.readthedocs.requirements.txt
index 1f028de414..e69de29bb2 100644
--- a/.readthedocs.requirements.txt
+++ b/.readthedocs.requirements.txt
@@ -1 +0,0 @@
-sphinx==4.4.0
diff --git a/.readthedocs.yml b/.readthedocs.yml
index e66d3da1b1..bf71c46b78 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -5,7 +5,7 @@
 version: 2
 
 build:
-  os: ubuntu-20.04
+  os: ubuntu-22.04
   tools:
     python: "3"