diff --git a/.gitignore b/.gitignore
index b7735f2..e57e8eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -330,3 +330,5 @@ ASALocalRun/
 .mfractor/
 .claude/settings.local.json
 sample change.txt
+.claude/settings.json
+
diff --git a/HydrantCAProxy/Client/Models/Enums/RevocationReasons.cs b/HydrantCAProxy/Client/Models/Enums/RevocationReasons.cs
index b096973..80f1e0e 100644
--- a/HydrantCAProxy/Client/Models/Enums/RevocationReasons.cs
+++ b/HydrantCAProxy/Client/Models/Enums/RevocationReasons.cs
@@ -16,6 +16,7 @@ namespace Keyfactor.HydrantId.Client.Models.Enums
     [JsonConverter(typeof(StringEnumConverter))]
     public enum RevocationReasons
     {
+        [EnumMember(Value = "0")] Unspecified = 0,
         [EnumMember(Value = "1")] KeyCompromise = 1,
         [EnumMember(Value = "3")] AffiliationChanged = 3,
         [EnumMember(Value = "4")] Superseded = 4,
diff --git a/HydrantCAProxy/RequestManager.cs b/HydrantCAProxy/RequestManager.cs
index ac47a34..e43fb42 100644
--- a/HydrantCAProxy/RequestManager.cs
+++ b/HydrantCAProxy/RequestManager.cs
@@ -78,6 +78,9 @@ public RevocationReasons GetMapRevokeReasons(uint keyfactorRevokeReason)
                 RevocationReasons returnStatus;
                 switch (keyfactorRevokeReason)
                 {
+                    case 0:
+                        returnStatus = RevocationReasons.Unspecified;
+                        break;
                     case 1:
                         returnStatus = RevocationReasons.KeyCompromise;
                         break;
@@ -92,8 +95,8 @@ public RevocationReasons GetMapRevokeReasons(uint keyfactorRevokeReason)
                         break;
                     default:
                         Log.LogError("GetMapRevokeReasons: unsupported revoke reason {Reason}", keyfactorRevokeReason);
-                        throw new RevokeReasonNotSupportedException($"Revoke reason {keyfactorRevokeReason} is not supported. Supported values: 1 (KeyCompromise), 3 (AffiliationChanged), 4 (Superseded), 5 (CessationOfOperation).");
-                }
+
+                        throw new RevokeReasonNotSupportedException($"Revoke reason {keyfactorRevokeReason} is not supported. Supported values: 0 (Unspecified), 1 (KeyCompromise), 3 (AffiliationChanged), 4 (Superseded), 5 (CessationOfOperation).");
 
                 Log.LogTrace("GetMapRevokeReasons: {Input} -> {Mapped}", keyfactorRevokeReason, returnStatus);
                 Log.MethodExit();