diff --git a/src/locales/en.json b/src/locales/en.json
index 48fc495..e173cb9 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -83,6 +83,7 @@
 
     "ZN": "inspection / diagnostic type",
     "ZU": "other maintenance type",
+    "ZG": "emergency (deprecated category)",
 
     "E": "electric loco",
     "J": "EMU",
diff --git a/src/locales/pl.json b/src/locales/pl.json
index 3fb23cf..22a3778 100644
--- a/src/locales/pl.json
+++ b/src/locales/pl.json
@@ -80,6 +80,7 @@
 
     "ZN": "inspekcyjny / diagnostyczny",
     "ZU": "inny utrzymaniowy",
+    "ZG": "ratunkowy (kat. wycofana)",
 
     "E": "elektrowóz",
     "J": "EZT",