diff --git a/doc/conf.py b/doc/conf.py
index c7e8fbc5..0933cfc4 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -137,6 +137,11 @@
 
 html_favicon = 'favicon.svg'
 html_title = project + ' version ' + release
+html_theme = 'sphinx_rtd_theme'
+html_theme_options = {
+    'navigation_with_keys': True,
+    'collapse_navigation': False,
+}
 
 # -- Options for LaTeX output ---------------------------------------------
 
diff --git a/doc/requirements.txt b/doc/requirements.txt
index 3c83291b..0f253ede 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,3 +1,4 @@
+sphinx_rtd_theme>=0.5
 ipykernel
 numpy
 matplotlib