diff --git a/docs/en/mkdocs.yml b/docs/en/mkdocs.yml
index c12a78c1f..3958dc1ea 100644
--- a/docs/en/mkdocs.yml
+++ b/docs/en/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon:
diff --git a/docs/es/mkdocs.yml b/docs/es/mkdocs.yml
index f5c6dcc62..4b945594c 100644
--- a/docs/es/mkdocs.yml
+++ b/docs/es/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/es/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon:
diff --git a/docs/it/mkdocs.yml b/docs/it/mkdocs.yml
index 66bc6a694..950790b36 100644
--- a/docs/it/mkdocs.yml
+++ b/docs/it/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/it/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon:
diff --git a/docs/pt/mkdocs.yml b/docs/pt/mkdocs.yml
index 260b53e19..74d07c09f 100644
--- a/docs/pt/mkdocs.yml
+++ b/docs/pt/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/pt/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon:
diff --git a/docs/ru/mkdocs.yml b/docs/ru/mkdocs.yml
index 732138599..75c42ca21 100644
--- a/docs/ru/mkdocs.yml
+++ b/docs/ru/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/ru/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon:
diff --git a/docs/zh/mkdocs.yml b/docs/zh/mkdocs.yml
index c73fe10f5..af3d51b32 100644
--- a/docs/zh/mkdocs.yml
+++ b/docs/zh/mkdocs.yml
@@ -4,6 +4,7 @@ site_url: https://fastapi.tiangolo.com/zh/
 theme:
   name: material
   palette:
+    scheme: preference
     primary: teal
     accent: amber
   icon: