diff --git a/.readthedocs.yaml b/.readthedocs.yaml
new file mode 100644
index 0000000..963f56f
--- /dev/null
+++ b/.readthedocs.yaml
@@ -0,0 +1,12 @@
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+python:
+  version: 3.8
+  install:
+    - method: pip
+      path: .
+      extra_requirements:
+        - docs
diff --git a/setup.py b/setup.py
index c8da369..6f0f9de 100644
--- a/setup.py
+++ b/setup.py
@@ -113,6 +113,10 @@ def write_version_py(filename=DEFAULT_VERSION_FILE,
     'scipy',
 ]
 
+EXTRAS_REQUIRE = {
+    "docs": ["enthought-sphinx-theme", "sphinx"],
+}
+
 
 if __name__ == "__main__":
     __version__ = write_version_py()
@@ -163,6 +167,7 @@ def write_version_py(filename=DEFAULT_VERSION_FILE,
         ext_modules=extensions,
         packages=find_packages(exclude=['docs', 'examples']),
         install_requires = DEPENDENCIES,
+        extras_require = EXTRAS_REQUIRE,
         license = "BSD",
         package_data = {'': ['images/*', 'data/*', 'scimath/units/data/*']},
         platforms = ["Windows", "Linux", "Mac OS-X", "Unix", "Solaris"],