diff --git a/sdk/attestation/Azure.Security.Attestation/CHANGELOG.md b/sdk/attestation/Azure.Security.Attestation/CHANGELOG.md
index c6132d82fe8f..624c84ad8c5d 100644
--- a/sdk/attestation/Azure.Security.Attestation/CHANGELOG.md
+++ b/sdk/attestation/Azure.Security.Attestation/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Release History
 
+## 1.1.0-beta.1 (Unreleased)
+
+
 ## 1.0.0 (2021-05-11)
 
 ### Changed
diff --git a/sdk/attestation/Azure.Security.Attestation/src/Azure.Security.Attestation.csproj b/sdk/attestation/Azure.Security.Attestation/src/Azure.Security.Attestation.csproj
index 4d87dde733e9..5ebfc90cba08 100644
--- a/sdk/attestation/Azure.Security.Attestation/src/Azure.Security.Attestation.csproj
+++ b/sdk/attestation/Azure.Security.Attestation/src/Azure.Security.Attestation.csproj
@@ -2,7 +2,9 @@
   <PropertyGroup>
     <Description>This is the project which implements the Microsoft Azure Attestation client API and package</Description>
     <AssemblyTitle>Azure SDK Template</AssemblyTitle>
-    <Version>1.0.0</Version>
+    <Version>1.1.0-beta.1</Version>
+    <!--The ApiCompatVersion is managed automatically and should not generally be modified manually.-->
+    <ApiCompatVersion>1.0.0</ApiCompatVersion>
     <PackageTags>Azure Template</PackageTags>
     <TargetFrameworks>$(RequiredTargetFrameworks)</TargetFrameworks>
   </PropertyGroup>