diff --git a/guide/_config.yml b/guide/_config.yml
index 2868c42..ee33274 100644
--- a/guide/_config.yml
+++ b/guide/_config.yml
@@ -20,7 +20,6 @@ sphinx:
     language: en
     latex_toplevel_sectioning: 'part'
     html_theme_options:
-      extra_navbar: ""
       extra_footer: |
         <p>Powered by <a href="https://jupyterbook.org/">Jupyter Book</a>.</p>
       home_page_in_toc: True
@@ -64,5 +63,3 @@ html:
   use_repository_button: true
   favicon: favicon.png
   extra_navbar: ""
-  extra_footer: |
-    <div>Powered by <a href="https://jupyterbook.org/">Jupyter Book</a>.</div>
diff --git a/socialforce/__init__.py b/socialforce/__init__.py
index ed03903..dc7ac4d 100644
--- a/socialforce/__init__.py
+++ b/socialforce/__init__.py
@@ -1,6 +1,6 @@
 """PyTorch implementation of the Social Force model."""
 
-__version__ = '0.2.2'
+__version__ = '0.2.3'
 
 from .field_of_view import FieldOfView
 from .trainer import Trainer