diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4072793..59ca3f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+## [1.0.0-preview.5] - 2022-12-12
+
+### Changed
+
+- Updates abstractions reference to add support for multi-valued headers.
+
 ## [1.0.0-preview.4] - 2022-09-19
 
 ### Added
diff --git a/Microsoft.Kiota.Authentication.Azure.Tests/AzureIdentityAuthenticationProviderTests.cs b/Microsoft.Kiota.Authentication.Azure.Tests/AzureIdentityAuthenticationProviderTests.cs
index 8d7db9c..b92709a 100644
--- a/Microsoft.Kiota.Authentication.Azure.Tests/AzureIdentityAuthenticationProviderTests.cs
+++ b/Microsoft.Kiota.Authentication.Azure.Tests/AzureIdentityAuthenticationProviderTests.cs
@@ -67,7 +67,7 @@ public async Task AuthenticateRequestAsyncSetsBearerHeader(string url, string ex
         {
             Assert.NotEmpty(testRequest.Headers); // header collection is no longer empty
             Assert.Equal("Authorization", testRequest.Headers.First().Key); // First element is Auth header
-            Assert.Equal($"Bearer {expectedToken}", testRequest.Headers.First().Value); // First element is Auth header
+            Assert.Equal($"Bearer {expectedToken}", testRequest.Headers["Authorization"].First()); // First element is Auth header
         }
     }
 
diff --git a/src/Microsoft.Kiota.Authentication.Azure.csproj b/src/Microsoft.Kiota.Authentication.Azure.csproj
index 972d6ba..d85122d 100644
--- a/src/Microsoft.Kiota.Authentication.Azure.csproj
+++ b/src/Microsoft.Kiota.Authentication.Azure.csproj
@@ -14,7 +14,7 @@
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <Deterministic>true</Deterministic>
     <VersionPrefix>1.0.0</VersionPrefix>
-    <VersionSuffix>preview.4</VersionSuffix>
+    <VersionSuffix>preview.5</VersionSuffix>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <!-- Enable this line once we go live to prevent breaking changes -->
@@ -23,7 +23,7 @@
     <DelaySign>false</DelaySign>
     <AssemblyOriginatorKeyFile>35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
     <PackageReleaseNotes>
-        - Added tracing through Open Telemetry.
+        - Added multi-value headers support.
     </PackageReleaseNotes>
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
@@ -32,7 +32,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
     <PackageReference Include="Azure.Core" Version="1.26.0" />
-    <PackageReference Include="Microsoft.Kiota.Abstractions" Version="1.0.0-preview.18" />
+    <PackageReference Include="Microsoft.Kiota.Abstractions" Version="1.0.0-preview.19" />
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="7.0.0" />
   </ItemGroup>