diff --git a/docs/conf.py b/docs/conf.py
index 7244d2d..996a499 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -30,7 +30,7 @@ from subprocess import Popen, PIPE
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
-extensions = ["sphinx.ext.extlinks", "sphinx.ext.autodoc"]
+extensions = ["sphinx.ext.extlinks", "sphinx.ext.autodoc", "sphinx_copybutton"]
 autodoc_member_order = "bysource"
 autodoc_typehints = "description"
 
diff --git a/setup.py b/setup.py
index 51830e3..eafb1ce 100644
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ setup(
     ],
     extras_require={
         "test": ["pytest", "black", "hypothesis", "cogapp"],
-        "docs": ["furo", "sphinx-autobuild", "codespell"],
+        "docs": ["furo", "sphinx-autobuild", "codespell", "sphinx-copybutton"],
         "mypy": [
             "mypy",
             "types-click",