diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 8e60f59..24ec291 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -1,14 +1,21 @@
 version: 2
 
+# Build PDF only
+formats:
+  - pdf
+
 build:
   os: "ubuntu-20.04"
   tools:
     python: "mambaforge-4.10"
 
-python:
-  install:
-    - method: pip
-      path: ./
+# uncomment to build from this exact version of package
+# the downside is the version listed in the docs will be a dev version
+# if uncommenting this, comment out installing pypi version of package in docs/env file
+# python:
+#   install:
+#     - method: pip
+#       path: ./
 
 conda:
     environment: docs/environment.yml
diff --git a/docs/environment.yml b/docs/environment.yml
index dfd858b..b666f66 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -22,6 +22,7 @@ dependencies:
    - pip
    - recommonmark
    - pip:
+     - cf_pandas
      - docrep<=0.2.7
      - furo
      - nbsphinx>=0.8.7