diff --git a/src/Core/Enums/GlobalEquivalentDomainsType.cs b/src/Core/Enums/GlobalEquivalentDomainsType.cs
index 34e376501d..7713ab0446 100644
--- a/src/Core/Enums/GlobalEquivalentDomainsType.cs
+++ b/src/Core/Enums/GlobalEquivalentDomainsType.cs
@@ -87,5 +87,6 @@
         Netcup = 82,
         Yandex = 83,
         Sony = 84,
+        Proton = 85,
     }
 }
diff --git a/src/Core/Utilities/StaticStore.cs b/src/Core/Utilities/StaticStore.cs
index 025027ea85..b5724b6763 100644
--- a/src/Core/Utilities/StaticStore.cs
+++ b/src/Core/Utilities/StaticStore.cs
@@ -96,6 +96,7 @@ namespace Bit.Core.Utilities
             GlobalDomains.Add(GlobalEquivalentDomainsType.Netcup, new List<string> { "netcup.de", "netcup.eu", "customercontrolpanel.de" });
             GlobalDomains.Add(GlobalEquivalentDomainsType.Yandex, new List<string> { "yandex.com", "ya.ru", "yandex.az", "yandex.by", "yandex.co.il", "yandex.com.am", "yandex.com.ge", "yandex.com.tr", "yandex.ee", "yandex.fi", "yandex.fr", "yandex.kg", "yandex.kz", "yandex.lt", "yandex.lv", "yandex.md", "yandex.pl", "yandex.ru", "yandex.tj", "yandex.tm", "yandex.ua", "yandex.uz" });
             GlobalDomains.Add(GlobalEquivalentDomainsType.Sony, new List<string> { "sonyentertainmentnetwork.com", "sony.com" });
+            GlobalDomains.Add(GlobalEquivalentDomainsType.Proton, new List<string> { "protonmail.com", "protonvpn.com" });
             #endregion
 
             #region Plans