diff --git a/.readthedocs.yml b/.readthedocs.yml
index 2f651d9ef..4a94e3761 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -8,6 +8,7 @@ version: 2
 build:
   apt_packages:
     - libhdf5-dev
+    - python3-netcdf4
   os: ubuntu-22.04
   tools:
     python: "3.7"