diff --git a/doc_build/rtd_env.yml b/doc_build/rtd_env.yml
index 58db0e25..842fac13 100644
--- a/doc_build/rtd_env.yml
+++ b/doc_build/rtd_env.yml
@@ -2,8 +2,9 @@ name: rtd_env
 channels:
   - defaults
 dependencies:
-  - python>=3.9
+  - python>=3.10
   - cartopy
+  - statsmodels
   - pip:
     - Sphinx<6.0
     - pylint
diff --git a/environment.yml b/environment.yml
index bf396f85..35540b07 100644
--- a/environment.yml
+++ b/environment.yml
@@ -4,7 +4,7 @@ name: pyleo
 channels:
   - default
 dependencies:
-  - python>=3.9
+  - python>=3.10
   - cartopy
   - numba
   - pyyaml