diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 51f89b1644..2a0e4a63d2 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -7,9 +7,9 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.23260.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.23261.4">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>1f8ffd35f5f4af2fd1c309c36f4dfcf7cffda4f6</Sha>
+      <Sha>06faa97f3e5232df0ddad42caaf28eea39d4ad1a</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.5.0">
diff --git a/eng/common/cross/x64/sources.list.bionic b/eng/common/cross/x64/sources.list.bionic
new file mode 100644
index 0000000000..a71ccadcff
--- /dev/null
+++ b/eng/common/cross/x64/sources.list.bionic
@@ -0,0 +1,11 @@
+deb http://archive.ubuntu.com/ubuntu/ bionic main restricted universe
+deb-src http://archive.ubuntu.com/ubuntu/ bionic main restricted universe
+
+deb http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe
+deb-src http://archive.ubuntu.com/ubuntu/ bionic-updates main restricted universe
+
+deb http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted
+deb-src http://archive.ubuntu.com/ubuntu/ bionic-backports main restricted
+
+deb http://archive.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
+deb-src http://archive.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
diff --git a/global.json b/global.json
index 93d8b936fd..c2d705c76b 100644
--- a/global.json
+++ b/global.json
@@ -18,6 +18,6 @@
     "rollForward": "patch"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.23260.3"
+    "Microsoft.DotNet.Arcade.Sdk": "8.0.0-beta.23261.4"
   }
 }