diff --git a/doc/conf.py b/doc/conf.py
index b501a3139851055015ba912ea353c00ad41ab375..c02a260d3914e13204d8f0c2dc42b6e6db491006 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -35,7 +35,9 @@ extensions = ["sphinx.ext.autodoc",
     "sphinx.ext.doctest",
     "sphinx.ext.intersphinx",
     "sphinx.ext.mathjax",
-    "sphinx.ext.viewcode"]
+    "sphinx.ext.viewcode",
+    "sphinx_copybutton",
+    ]
 autoclass_content = "class"
 
 # Add any paths that contain templates here, relative to this directory.