diff --git a/src/Microsoft.Identity.Web/MergedOptions.cs b/src/Microsoft.Identity.Web/MergedOptions.cs
index 3766b9b27..43949ebc5 100644
--- a/src/Microsoft.Identity.Web/MergedOptions.cs
+++ b/src/Microsoft.Identity.Web/MergedOptions.cs
@@ -65,6 +65,17 @@ internal static void UpdateMergedOptionsFromMicrosoftIdentityOptions(MicrosoftId
             mergedOptions.BackchannelHttpHandler ??= microsoftIdentityOptions.BackchannelHttpHandler;
             mergedOptions.BackchannelTimeout = microsoftIdentityOptions.BackchannelTimeout;
             mergedOptions.CallbackPath = microsoftIdentityOptions.CallbackPath;
+
+            mergedOptions.ClaimActions.Clear();
+
+            foreach (var claimAction in microsoftIdentityOptions.ClaimActions)
+            {
+                if (!mergedOptions.ClaimActions.Contains(claimAction))
+                {
+                    mergedOptions.ClaimActions.Add(claimAction);
+                }
+            }
+            
             if (string.IsNullOrEmpty(mergedOptions.ClaimsIssuer) && !string.IsNullOrEmpty(microsoftIdentityOptions.ClaimsIssuer))
             {
                 mergedOptions.ClaimsIssuer = microsoftIdentityOptions.ClaimsIssuer;
diff --git a/tests/Microsoft.Identity.Web.Test/MicrosoftIdentityOptionsTests.cs b/tests/Microsoft.Identity.Web.Test/MicrosoftIdentityOptionsTests.cs
index 461032b21..3e5e3c194 100644
--- a/tests/Microsoft.Identity.Web.Test/MicrosoftIdentityOptionsTests.cs
+++ b/tests/Microsoft.Identity.Web.Test/MicrosoftIdentityOptionsTests.cs
@@ -3,7 +3,11 @@
 
 using System;
 using System.Globalization;
+using System.Linq;
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authentication.OAuth.Claims;
 using Microsoft.AspNetCore.Authentication.OpenIdConnect;
+using Microsoft.AspNetCore.Authentication.OpenIdConnect.Claims;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Microsoft.Identity.Client;
@@ -102,6 +106,41 @@ public void ValidateRequiredMicrosoftIdentityOptions(
             }
         }
 
+        [Fact]
+        public void TestMergedOptions_ContainsClaimsActions()
+        {
+
+            _microsoftIdentityOptionsMonitor = new TestOptionsMonitor<MicrosoftIdentityOptions>(new MicrosoftIdentityOptions
+            {
+                ClaimActions =
+                {
+                    new UniqueJsonKeyClaimAction(ClaimTypes.Gender, "string", "sex"),
+                },
+            });
+
+            BuildTheRequiredServices();
+            MergedOptions mergedOptions = _provider.GetRequiredService<IOptionsMonitor<MergedOptions>>().Get(OpenIdConnectDefaults.AuthenticationScheme);
+
+            MergedOptions.UpdateMergedOptionsFromMicrosoftIdentityOptions(_microsoftIdentityOptionsMonitor.Get(OpenIdConnectDefaults.AuthenticationScheme), mergedOptions);
+
+            // Verify that the mergedOptions.ClaimActions has claims
+            // It should contain some default ones along with our added one
+            Assert.NotEmpty(mergedOptions.ClaimActions.AsEnumerable());
+
+            // See if we can find the ClaimAction that we added
+            Assert.Contains(mergedOptions.ClaimActions, action => action.ClaimType == ClaimTypes.Gender);
+
+            // Select the single ClaimAction from the collection
+            var genderClaim = mergedOptions.ClaimActions.Single(x => x.ClaimType == ClaimTypes.Gender);
+
+            // Assert its a type of UniqueJsonKeyClaimAction
+            Assert.IsType<UniqueJsonKeyClaimAction>(genderClaim);
+
+            // Ensure gender has the value of sex
+            var jsonKeyClaim = genderClaim as UniqueJsonKeyClaimAction;
+            Assert.Equal(jsonKeyClaim.JsonKey, "sex");
+        }
+
         private void BuildTheRequiredServices()
         {
             var services = new ServiceCollection();