diff --git a/Wino.Mail/Package.appxmanifest b/Wino.Mail/Package.appxmanifest
index 15795685..c0457ee6 100644
--- a/Wino.Mail/Package.appxmanifest
+++ b/Wino.Mail/Package.appxmanifest
@@ -20,8 +20,8 @@
 	
   <Identity
     Name="58272BurakKSE.WinoMailPreview"
-    Publisher="CN=51FBDAF3-E212-4149-89A2-A2636B3BC911"
-    Version="1.7.8.0" />
+    Publisher="CN=bkaan"
+    Version="1.9.1.0" />
 
   <mp:PhoneIdentity PhoneProductId="0f6f3c1b-6ffd-4212-9c91-a16e8d1fa437" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
 
diff --git a/Wino.Mail/Wino.Mail.csproj b/Wino.Mail/Wino.Mail.csproj
index 229087c2..9c711a2c 100644
--- a/Wino.Mail/Wino.Mail.csproj
+++ b/Wino.Mail/Wino.Mail.csproj
@@ -6,7 +6,7 @@
     <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
     <!-- UWP WAM Authentication on Xbox needs this. -->
     <UseDotNetNativeSharedAssemblyFrameworkPackage>false</UseDotNetNativeSharedAssemblyFrameworkPackage>
-    <PackageCertificateThumbprint>00DAFAA341D08AE3885153A11E1C4E34D63B332A</PackageCertificateThumbprint>
+    <PackageCertificateThumbprint>3B34414D49FBF00A35A040085092D8699459EA8E</PackageCertificateThumbprint>
   </PropertyGroup>
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -24,8 +24,7 @@
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
-    <PackageCertificateKeyFile>
-    </PackageCertificateKeyFile>
+    <PackageCertificateKeyFile>Wino.Mail_TemporaryKey.pfx</PackageCertificateKeyFile>
     <GenerateAppInstallerFile>False</GenerateAppInstallerFile>
     <AppxPackageSigningTimestampDigestAlgorithm>SHA256</AppxPackageSigningTimestampDigestAlgorithm>
     <AppxAutoIncrementPackageRevision>False</AppxAutoIncrementPackageRevision>
@@ -752,6 +751,7 @@
     <Content Include="Assets\Square44x44Logo.scale-200.png" />
     <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
     <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+    <None Include="Wino.Mail_TemporaryKey.pfx" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="Assets\Thumbnails\uber.com.png" />