diff --git a/doc/_static/custom.css b/doc/_static/custom.css
new file mode 100644
index 0000000000000000000000000000000000000000..9b5284b9beb1b5264079ee595a09fcf6add57146
--- /dev/null
+++ b/doc/_static/custom.css
@@ -0,0 +1,3 @@
+body{
+    font-family: Ubuntu, sans-serif;
+}
diff --git a/doc/conf.py b/doc/conf.py
index c60709021ad2f6aa843f15061b19c60ca3a52595..22dc7b8d54ef97787d12dbbb8e61bb3e87219e7f 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -69,6 +69,9 @@ html_theme = 'alabaster'
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
+html_css_files = [
+        'custom.css',
+]
 
 # -- Options for LaTeX output ---------------------------------------------