diff --git a/.gitattributes b/.gitattributes
index 03051dc..022fd1a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -7,6 +7,7 @@
 
 # Config
 *.gitignore text
+*.gitmodules text
 *.gitattributes text
 *.editorconfig text
 *.git-blame-ignore-revs text
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..5727261
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "Protocol"]
+	path = Protocol
+	url = https://github.com/harp-tech/protocol.git
diff --git a/Bonsai.Harp/Bonsai.Harp.csproj b/Bonsai.Harp/Bonsai.Harp.csproj
index 55f803b..0fa3378 100644
--- a/Bonsai.Harp/Bonsai.Harp.csproj
+++ b/Bonsai.Harp/Bonsai.Harp.csproj
@@ -7,7 +7,7 @@
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TargetFrameworks>net462;netstandard2.0</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <VersionPrefix>3.5.0</VersionPrefix>
+    <VersionPrefix>3.6.0</VersionPrefix>
   </PropertyGroup>
 
   <ItemGroup>
@@ -17,6 +17,7 @@
 
   <ItemGroup>
     <EmbeddedResource Include="*.bonsai" />
+    <EmbeddedResource Include="../Protocol/schema/common.yml" />
   </ItemGroup>
 
 </Project>
diff --git a/Protocol b/Protocol
new file mode 160000
index 0000000..4089d22
--- /dev/null
+++ b/Protocol
@@ -0,0 +1 @@
+Subproject commit 4089d225185a11683e395c8040ac2b12dbefd12a