diff --git a/config.toml b/config.toml
index 7ef45b0..3671209 100644
--- a/config.toml
+++ b/config.toml
@@ -99,6 +99,13 @@ translated_name = "polski"
 name = "Brazilian Portuguese"
 translated_name = "Português brasileiro"
 
+[languages.fa]
+name = "Persian"
+translated_name = "فارسی"
+sphinxopts = [
+    '-D html_theme_options.is_rtl=true',
+]
+
 [languages.ro]
 name = "Romanian"
 translated_name = "Românește"