diff --git a/src/PhoneNumbers.Utilities.TestGenerator/TestFileWriter.cs b/src/PhoneNumbers.Utilities.TestGenerator/TestFileWriter.cs
index a9cbc7f..9027475 100644
--- a/src/PhoneNumbers.Utilities.TestGenerator/TestFileWriter.cs
+++ b/src/PhoneNumbers.Utilities.TestGenerator/TestFileWriter.cs
@@ -8,7 +8,7 @@ internal static class TestFileWriter
     private static string LookUpTrunkCode(string countryCode) =>
         countryCode switch
         {
-            "AT" or "AU" or "BE" or "BG" or "BR" or "CH" or "DE" or "EG" or "FI" or "FR" or "GB" or "GG" or "HR" or "IE" or "IM" or "IL" or "JE" or "KE" or "MD" or "NL" or "NG" or "NZ" or "RO" or "RS" or "SE" or "SK" or "SL" or "UA" or "XK" or "ZA" => "0",
+            "AT" or "AU" or "BE" or "BG" or "BR" or "CH" or "DE" or "EG" or "FI" or "FR" or "GB" or "GG" or "HR" or "IE" or "IM" or "IL" or "JE" or "KE" or "MD" or "ME" or "NL" or "NG" or "NZ" or "RO" or "RS" or "SE" or "SK" or "SL" or "UA" or "XK" or "ZA" => "0",
             "HU" => "06",
             "BY" or "LT" => "8",
             _ => string.Empty,
@@ -66,6 +66,7 @@ private static string CountryCodeToCountryInfoName(string countryCode) =>
             "KY" => "CaymanIslands",
             "MC" => "Monaco",
             "MD" => "Moldova",
+            "ME" => "Montenegro",
             "MO" => "Macau",
             "MP" => "NorthernMarianaIsland",
             "MS" => "Montserrat",