diff --git a/docs/conf.py b/docs/conf.py
index 6547ac36..76aba860 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -24,6 +24,7 @@ sys.path.append(os.path.abspath('./demo/'))
 import sphinx_rtd_theme
 from sphinx.locale import _
 
+print(f'Using sphinx_rtd_theme: {sphinx_rtd_theme.__file__}')
 
 project = u'Read the Docs Sphinx Theme'
 slug = re.sub(r'\W+', '-', project.lower())