diff --git a/.circleci/config.yml b/.circleci/config.yml
index f3d53ee..15183ed 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,7 @@
 version: 2.1
 
 orbs:
-  python: circleci/python@1.2.1
+  python: circleci/python@3.2.0
 
 jobs:
   build_docs:
diff --git a/docs/requirements.txt b/docs/requirements.txt
index ac8252b..09a2253 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -3,3 +3,4 @@ markdown
 pyyaml
 sphinx
 mpl-sphinx-theme~=3.9.0
+pydata-sphinx-theme~=0.15.0