diff --git a/conf.py b/conf.py
index 4637fdd..fd10c12 100644
--- a/conf.py
+++ b/conf.py
@@ -15,7 +15,7 @@
 # import os
 # import sys
 # sys.path.insert(0, os.path.abspath('.'))
-
+import sphinx_rtd_theme
 
 # -- Project information -----------------------------------------------------
 
@@ -39,6 +39,7 @@ needs_sphinx = '4.4'
 # ones.
 extensions = [
     'sphinx.ext.autodoc',
+    'sphinx_rtd_theme',
 ]
 
 rst_epilog = """