diff --git a/config/schemas/mod.json b/config/schemas/mod.json
index 10621db8f..9c0d5b4e3 100644
--- a/config/schemas/mod.json
+++ b/config/schemas/mod.json
@@ -153,7 +153,7 @@
 		"language" : {
 			"type" : "string",
 			"description" : "Base language of the mod, before applying localizations. By default vcmi assumes English",
-			"enum" : [ "czech", "chinese", "english", "french", "german", "hungarian", "italian", "korean", "polish", "russian", "spanish", "ukrainian" ]
+			"enum" : [ "czech", "chinese", "english", "finnish", "french", "german", "hungarian", "italian", "korean", "polish", "portuguese", "russian", "spanish", "swedish", "turkish", "ukrainian" ]
 		},
 		"czech" : {
 			"$ref" : "#/definitions/localizable"
@@ -164,6 +164,9 @@
 		"english" : {
 			"$ref" : "#/definitions/localizable"
 		},
+		"finnish" : {
+			"$ref" : "#/definitions/localizable"
+		},
 		"french" : {
 			"$ref" : "#/definitions/localizable"
 		},
@@ -182,12 +185,21 @@
 		"polish" : {
 			"$ref" : "#/definitions/localizable"
 		},
+		"portuguese" : {
+			"$ref" : "#/definitions/localizable"
+		},
 		"russian" : {
 			"$ref" : "#/definitions/localizable"
 		},
 		"spanish" : {
 			"$ref" : "#/definitions/localizable"
 		},
+		"swedish" : {
+			"$ref" : "#/definitions/localizable"
+		},
+		"turkish" : {
+			"$ref" : "#/definitions/localizable"
+		},
 		"ukrainian" : {
 			"$ref" : "#/definitions/localizable"
 		},