diff --git a/src/Api/Controllers/AccountsController.cs b/src/Api/Controllers/AccountsController.cs
index 181d459d2..8da02bcdf 100644
--- a/src/Api/Controllers/AccountsController.cs
+++ b/src/Api/Controllers/AccountsController.cs
@@ -170,10 +170,17 @@ namespace Bit.Api.Controllers
         }
 
         [HttpGet("revision-date")]
-        public async Task<DateTime?> GetAccountRevisionDate()
+        public async Task<long?> GetAccountRevisionDate()
         {
             var userId = _userService.GetProperUserId(User);
-            return userId.HasValue ? (await _userService.GetAccountRevisionDateByIdAsync(userId.Value)) : (DateTime?)null;
+            long? revisionDate = null;
+            if(userId.HasValue)
+            {
+                var date = await _userService.GetAccountRevisionDateByIdAsync(userId.Value);
+                revisionDate = Core.Utilities.CoreHelpers.EpocMilliseconds(date);
+            }
+
+            return revisionDate;
         }
 
         [HttpGet("two-factor")]
diff --git a/src/Core/Utilities/CoreHelpers.cs b/src/Core/Utilities/CoreHelpers.cs
index b3317c74d..56bed884f 100644
--- a/src/Core/Utilities/CoreHelpers.cs
+++ b/src/Core/Utilities/CoreHelpers.cs
@@ -7,6 +7,7 @@ namespace Bit.Core.Utilities
     public static class CoreHelpers
     {
         private static readonly long _baseDateTicks = new DateTime(1900, 1, 1).Ticks;
+        private static readonly DateTime _epoc = new DateTime(1970, 1, 1);
 
         /// <summary>
         /// Generate sequential Guid for Sql Server.
@@ -57,5 +58,10 @@ namespace Bit.Core.Utilities
             certStore.Close();
             return cert;
         }
+
+        public static long EpocMilliseconds(DateTime date)
+        {
+            return (long)Math.Round((date - _epoc).TotalMilliseconds, 0);
+        }
     }
 }