diff --git a/docs/en/mkdocs.yml b/docs/en/mkdocs.yml
index 22a85ef876b9297bf62954f2941c1026fa13df81..cc990d44be441298ba0ae2a34191f5a9d3442afa 100644
--- a/docs/en/mkdocs.yml
+++ b/docs/en/mkdocs.yml
@@ -2421,6 +2421,13 @@ plugins:
   - macros:
       module_name: macros
 extra:
+  alternate:
+      - name: English
+        link: /master/en/
+        lang: en
+      - name: Russian
+        link: /master/ru/
+        lang: ru
   "tab": ":material-arrow-right:"
   "tab2": ":material-arrow-right: :material-arrow-right:"
   "tab3": ":material-arrow-right: :material-arrow-right: :material-arrow-right:"
diff --git a/docs/ru/mkdocs.yml b/docs/ru/mkdocs.yml
index 06c2365d94424af097331661a2791dfa590de809..425c83a7a00fad5a1e107f62933254bc05ba80dc 100644
--- a/docs/ru/mkdocs.yml
+++ b/docs/ru/mkdocs.yml
@@ -1119,6 +1119,7 @@ nav:
   - Glossary: glossary.md
 theme:
   name: material
+  language: en
   features:
     - navigation.tabs
     - navigation.instant
@@ -1173,6 +1174,13 @@ plugins:
             filters:
               - "!^__"  # exlude all members starting with _
 extra:
+  alternate:
+      - name: Английский
+        link: /master/en/
+        lang: en
+      - name: Русский
+        link: /master/ru/
+        lang: ru
   "tab": ":material-arrow-right:"
   "tab2": ":material-arrow-right: :material-arrow-right:"
   "tab3": ":material-arrow-right: :material-arrow-right: :material-arrow-right:"