diff --git a/apps/lang/slovak.lang b/apps/lang/slovak.lang
index 9c4e06231a..d8b143d325 100644
--- a/apps/lang/slovak.lang
+++ b/apps/lang/slovak.lang
@@ -8827,7 +8827,7 @@
     *: ""
   </dest>
   <voice>
-    *: "~oh"
+    *: "~"
   </voice>
 </phrase>
 <phrase>
diff --git a/docs/CREDITS b/docs/CREDITS
index 47cac064ed..61f0304a4f 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -744,8 +744,8 @@ Yannic Schmidt
 Hairo R. Carela
 Sergio Delgado
 Cameron John Peck
-Chu Khánh Hạnh
-Hoàng Mạnh Phú
+Chu Khánh Hanh
+Hoàng Manh Phú
 
 The libmad team
 The wavpack team
diff --git a/tools/builds.pm b/tools/builds.pm
index 622c517913..2d2d20e838 100644
--- a/tools/builds.pm
+++ b/tools/builds.pm
@@ -947,6 +947,18 @@ sub simbuilds {
 	},
         'enabled' => 1,
     },
+    'vietnamese' => {
+        'lang' => 'vietnamese',
+        'name' => 'Tiếng Việt (Vietnamese)',
+        'short' => 'vi',
+        'defengine' => 'piper',
+        'engines' => {
+            'espeak' => '-vvi',
+	    'gtts' => '-l vi',
+            'piper' => 'vi_VN-vais1000-medium.onnx',
+        },
+        'enabled' => 1,
+    },
 );
 
 sub byshortname {
diff --git a/utils/rbutilqt/rbutil.ini b/utils/rbutilqt/rbutil.ini
index 888fcf52a4..9f518a6162 100644
--- a/utils/rbutilqt/rbutil.ini
+++ b/utils/rbutilqt/rbutil.ini
@@ -1135,6 +1135,7 @@ th=thai,ภาษาไทย
 tl=tagalog,Tagalog
 tr=turkce,Türkçe
 uk=ukranian,украї́нська
+vi=vietnamese,Tiếng Việt
 wa=walon,Wallon
 zh_CN=chinese-simp,简体中文
 zh_TW=chinese-trad,正體中文