diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
index 9ffe199f1d..6f08a1f8fc 100644
--- a/src/Core/Constants.cs
+++ b/src/Core/Constants.cs
@@ -239,6 +239,8 @@ public static class FeatureFlagKeys
     /* Vault Team */
     public const string CipherKeyEncryption = "cipher-key-encryption";
     public const string PM19941MigrateCipherDomainToSdk = "pm-19941-migrate-cipher-domain-to-sdk";
+
+    public const string PM28190CipherSharingOpsToSdk = "pm-28190-cipher-sharing-ops-to-sdk";
     public const string PhishingDetection = "phishing-detection";
     public const string PM22134SdkCipherListView = "pm-22134-sdk-cipher-list-view";
     public const string PM22136_SdkCipherEncryption = "pm-22136-sdk-cipher-encryption";