diff --git a/doc/requirements.txt b/doc/requirements.txt
index 956df97689b..e6edcf66b06 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,5 @@
 sphinx
 sphinxcontrib-programoutput
 sphinx-rtd-theme
+sphinx-copybutton
 evv4esm
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 0239006c530..c6a1de2db7e 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -1,4 +1,4 @@
-# -*- coding: utf-8 -*-
+# -* coding: utf-8 -*-
 #
 # on documentation build configuration file, created by
 # sphinx-quickstart on Tue Jan 31 19:46:36 2017.
@@ -46,6 +46,7 @@
     "sphinx.ext.todo",
     "sphinxcontrib.programoutput",
     "sphinx_rtd_theme",
+    "sphinx_copybutton",
 ]
 todo_include_todos = True