diff --git a/.readthedocs.yml b/.readthedocs.yml
index 6753d87..38a95e3 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -14,3 +14,9 @@ formats: all
 # Set requirements using conda env
 conda:
   environment: docs/conda_env.yml
+
+build:
+  os: ubuntu-22.04
+  tools:
+    # Note: we are using a conda env, we specify one tool as it is required
+    python: "3.10"