diff --git a/src/AppInstallerCLIE2ETests/Constants.cs b/src/AppInstallerCLIE2ETests/Constants.cs
index 71ff10e33a..5ed84ad6f3 100644
--- a/src/AppInstallerCLIE2ETests/Constants.cs
+++ b/src/AppInstallerCLIE2ETests/Constants.cs
@@ -17,8 +17,8 @@ public class Constants
         public const string AppInstallerTestCertThumbprint = "d03e7a688b388b1edde8476a627531c49db88017";
 
         // Todo: not needed if switch to use prod index for source tests
-        public const string IndexPackageCert = "IndexPackageInt.cer";
-        public const string IndexPackageCertThumbprint = "1da968e670a0257f61628aad20c60c64fdecd41a";
+        public const string IndexPackageRootCert = "IndexPackageIntRoot.cer";
+        public const string IndexPackageRootCertThumbprint = "d17697cc206ed26e1a51f5bb96e9356d6d610b74";
 
         public const string AICLIPackageFamilyName = "AppInstallerCLI_8wekyb3d8bbwe";
         public const string AICLIPackageName = "AppInstallerCLI";
diff --git a/src/AppInstallerCLIE2ETests/SetUpFixture.cs b/src/AppInstallerCLIE2ETests/SetUpFixture.cs
index ec904b8b53..1bfe3b82f2 100644
--- a/src/AppInstallerCLIE2ETests/SetUpFixture.cs
+++ b/src/AppInstallerCLIE2ETests/SetUpFixture.cs
@@ -63,7 +63,7 @@ public void Setup()
             ShouldDisableDevModeOnExit = EnableDevMode(true);
 
             Assert.True(TestCommon.RunCommand("certutil.exe", "-addstore -f \"TRUSTEDPEOPLE\" " + TestCommon.GetTestDataFile(Constants.AppInstallerTestCert)));
-            Assert.True(TestCommon.RunCommand("certutil.exe", "-addstore -f \"TRUSTEDPEOPLE\" " + TestCommon.GetTestDataFile(Constants.IndexPackageCert)));
+            Assert.True(TestCommon.RunCommand("certutil.exe", "-addstore -f \"ROOT\" " + TestCommon.GetTestDataFile(Constants.IndexPackageRootCert)));
 
             if (TestCommon.PackagedContext)
             {
@@ -88,7 +88,7 @@ public void TearDown()
             }
 
             TestCommon.RunCommand("certutil.exe", $"-delstore \"TRUSTEDPEOPLE\" {Constants.AppInstallerTestCertThumbprint}");
-            TestCommon.RunCommand("certutil.exe", $"-delstore \"TRUSTEDPEOPLE\" {Constants.IndexPackageCertThumbprint}");
+            TestCommon.RunCommand("certutil.exe", $"-delstore \"ROOT\" {Constants.IndexPackageRootCertThumbprint}");
 
             if (TestCommon.PackagedContext)
             {
diff --git a/src/AppInstallerCLIE2ETests/TestData/IndexPackageInt.cer b/src/AppInstallerCLIE2ETests/TestData/IndexPackageInt.cer
deleted file mode 100644
index 113b12849e..0000000000
Binary files a/src/AppInstallerCLIE2ETests/TestData/IndexPackageInt.cer and /dev/null differ
diff --git a/src/AppInstallerCLIE2ETests/TestData/IndexPackageIntRoot.cer b/src/AppInstallerCLIE2ETests/TestData/IndexPackageIntRoot.cer
new file mode 100644
index 0000000000..4177d302bb
Binary files /dev/null and b/src/AppInstallerCLIE2ETests/TestData/IndexPackageIntRoot.cer differ