diff --git a/src/data/catalogs.json b/src/data/catalogs.json
index 4a4272de..2d5bef10 100644
--- a/src/data/catalogs.json
+++ b/src/data/catalogs.json
@@ -107,11 +107,17 @@
     "name": "Dutch",
     "completion": 48
   },
+  {
+    "code": "pl-PL",
+    "nativeName": "polski",
+    "name": "Polish",
+    "completion": 1
+  },
   {
     "code": "ru-RU",
     "nativeName": "русский",
     "name": "Russian",
-    "completion": 99
+    "completion": 100
   },
   {
     "code": "th-TH",