diff --git a/src/Aspire.Cli/Agents/AspireSkills/AspireSkillsInstaller.cs b/src/Aspire.Cli/Agents/AspireSkills/AspireSkillsInstaller.cs
index 3c727c1eea5..dbc2f1cfdd5 100644
--- a/src/Aspire.Cli/Agents/AspireSkills/AspireSkillsInstaller.cs
+++ b/src/Aspire.Cli/Agents/AspireSkills/AspireSkillsInstaller.cs
@@ -31,7 +31,7 @@ internal sealed class AspireSkillsInstaller(
     internal const string GitHubRepository = "microsoft/aspire-skills";
     internal const string ExpectedSourceRepository = $"https://github.com/{GitHubRepository}";
     internal const string ExpectedWorkflowPath = ".github/workflows/publish.yml";
-    internal const string ExpectedBuildType = "https://slsa-framework.github.io/github-actions-buildtypes/workflow/v1";
+    internal const string ExpectedBuildType = "https://actions.github.io/buildtypes/workflow/v1";
     internal const string DisablePackageValidationKey = "disableAspireSkillsPackageValidation";
     internal const string VersionOverrideKey = "aspireSkillsVersion";
     internal const string MaxCacheAgeKey = "AspireSkillsMaxCacheAgeSeconds";
diff --git a/tests/Aspire.Cli.Tests/Agents/AspireSkillsInstallerTests.cs b/tests/Aspire.Cli.Tests/Agents/AspireSkillsInstallerTests.cs
index 9aa79f45fce..f17750521e0 100644
--- a/tests/Aspire.Cli.Tests/Agents/AspireSkillsInstallerTests.cs
+++ b/tests/Aspire.Cli.Tests/Agents/AspireSkillsInstallerTests.cs
@@ -19,6 +19,8 @@ namespace Aspire.Cli.Tests.Agents;
 
 public class AspireSkillsInstallerTests
 {
+    private const string GitHubReleaseAssetBuildType = "https://actions.github.io/buildtypes/workflow/v1";
+
     [Fact]
     public async Task InstallAsync_WhenValidBundleIsCached_UsesCacheWithoutNetwork()
     {
@@ -120,6 +122,11 @@ public async Task InstallAsync_WhenGitHubReleaseAssetIsAvailable_UsesGitHub()
             Assert.Equal(AspireSkillsInstallStatus.Installed, result.Status);
             Assert.NotNull(result.Bundle);
             Assert.True(attestationVerifier.VerifyCalled);
+            Assert.Equal(AspireSkillsInstaller.GitHubRepository, attestationVerifier.Repository);
+            Assert.Equal(AspireSkillsInstaller.ExpectedSourceRepository, attestationVerifier.ExpectedSourceRepository);
+            Assert.Equal(AspireSkillsInstaller.ExpectedWorkflowPath, attestationVerifier.ExpectedWorkflowPath);
+            Assert.Equal(GitHubReleaseAssetBuildType, attestationVerifier.ExpectedBuildType);
+            Assert.Equal(AspireSkillsInstaller.Version, attestationVerifier.ExpectedVersion);
             Assert.NotNull(releaseRequestUri);
             Assert.NotNull(assetRequestUri);
             Assert.Contains("/microsoft/aspire-skills/releases/tags/v0.0.1", releaseRequestUri.AbsolutePath);
@@ -298,6 +305,16 @@ private sealed class TestGitHubArtifactAttestationVerifier : IGitHubArtifactAtte
     {
         public bool VerifyCalled { get; private set; }
 
+        public string? Repository { get; private set; }
+
+        public string? ExpectedSourceRepository { get; private set; }
+
+        public string? ExpectedWorkflowPath { get; private set; }
+
+        public string? ExpectedBuildType { get; private set; }
+
+        public string? ExpectedVersion { get; private set; }
+
         public ProvenanceVerificationResult Result { get; init; } = new()
         {
             Outcome = ProvenanceVerificationOutcome.Verified,
@@ -314,6 +331,12 @@ public Task<ProvenanceVerificationResult> VerifyAsync(
             CancellationToken cancellationToken)
         {
             VerifyCalled = true;
+            Repository = repository;
+            ExpectedSourceRepository = expectedSourceRepository;
+            ExpectedWorkflowPath = expectedWorkflowPath;
+            ExpectedBuildType = expectedBuildType;
+            ExpectedVersion = expectedVersion;
+
             return Task.FromResult(Result);
         }
     }
diff --git a/tests/Aspire.Cli.Tests/Agents/SigstoreNpmProvenanceCheckerTests.cs b/tests/Aspire.Cli.Tests/Agents/SigstoreNpmProvenanceCheckerTests.cs
index 0be6846b93a..89ad1ed48bc 100644
--- a/tests/Aspire.Cli.Tests/Agents/SigstoreNpmProvenanceCheckerTests.cs
+++ b/tests/Aspire.Cli.Tests/Agents/SigstoreNpmProvenanceCheckerTests.cs
@@ -9,6 +9,8 @@ namespace Aspire.Cli.Tests.Agents;
 
 public class SigstoreNpmProvenanceCheckerTests
 {
+    private const string GitHubReleaseAssetBuildType = "https://actions.github.io/buildtypes/workflow/v1";
+
     #region ExtractSlsaBundleJson Tests
 
     [Fact]
@@ -259,6 +261,59 @@ public void VerifyProvenanceFields_WithAllFieldsMatching_ReturnsVerified()
         Assert.Equal(ProvenanceVerificationOutcome.Verified, result.Outcome);
     }
 
+    [Fact]
+    public void VerifyProvenanceFields_WithGitHubReleaseAssetBuildType_ReturnsVerified()
+    {
+        var provenance = new NpmProvenanceData
+        {
+            SourceRepository = "https://github.com/microsoft/aspire-skills",
+            WorkflowPath = ".github/workflows/publish.yml",
+            BuildType = GitHubReleaseAssetBuildType,
+            WorkflowRef = "refs/tags/v0.0.1",
+            BuilderId = "https://github.com/microsoft/aspire-skills/.github/workflows/publish.yml@refs/tags/v0.0.1"
+        };
+
+        var result = SigstoreNpmProvenanceChecker.VerifyProvenanceFields(
+            provenance,
+            "https://github.com/microsoft/aspire-skills",
+            ".github/workflows/publish.yml",
+            GitHubReleaseAssetBuildType,
+            refInfo => string.Equals(refInfo.Kind, "tags", StringComparison.Ordinal) &&
+                       string.Equals(refInfo.Name, "v0.0.1", StringComparison.Ordinal));
+
+        Assert.Equal(ProvenanceVerificationOutcome.Verified, result.Outcome);
+    }
+
+    [Theory]
+    [InlineData("https://github.com/evil/aspire-skills", ".github/workflows/publish.yml", "refs/tags/v0.0.1", nameof(ProvenanceVerificationOutcome.SourceRepositoryMismatch))]
+    [InlineData("https://github.com/microsoft/aspire-skills", ".github/workflows/evil.yml", "refs/tags/v0.0.1", nameof(ProvenanceVerificationOutcome.WorkflowMismatch))]
+    [InlineData("https://github.com/microsoft/aspire-skills", ".github/workflows/publish.yml", "refs/heads/main", nameof(ProvenanceVerificationOutcome.WorkflowRefMismatch))]
+    public void VerifyProvenanceFields_WithGitHubReleaseAssetBuildType_RejectsUnexpectedProvenance(
+        string sourceRepository,
+        string workflowPath,
+        string workflowRef,
+        string expectedOutcome)
+    {
+        var provenance = new NpmProvenanceData
+        {
+            SourceRepository = sourceRepository,
+            WorkflowPath = workflowPath,
+            BuildType = GitHubReleaseAssetBuildType,
+            WorkflowRef = workflowRef,
+            BuilderId = "https://github.com/microsoft/aspire-skills/.github/workflows/publish.yml@refs/tags/v0.0.1"
+        };
+
+        var result = SigstoreNpmProvenanceChecker.VerifyProvenanceFields(
+            provenance,
+            "https://github.com/microsoft/aspire-skills",
+            ".github/workflows/publish.yml",
+            GitHubReleaseAssetBuildType,
+            refInfo => string.Equals(refInfo.Kind, "tags", StringComparison.Ordinal) &&
+                       string.Equals(refInfo.Name, "v0.0.1", StringComparison.Ordinal));
+
+        Assert.Equal(Enum.Parse<ProvenanceVerificationOutcome>(expectedOutcome), result.Outcome);
+    }
+
     [Fact]
     public void VerifyProvenanceFields_WithSourceRepoMismatch_ReturnsSourceRepositoryMismatch()
     {