diff --git a/Directory.Build.props b/Directory.Build.props
index c702921..dca6c5d 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
     <PropertyGroup>
-        <Version>0.0.0.0</Version>
-        <AssemblyVersion>0.0.0.0</AssemblyVersion>
-        <FileVersion>0.0.0.0</FileVersion>
+        <Version>0.0.1.0</Version>
+        <AssemblyVersion>0.0.1.0</AssemblyVersion>
+        <FileVersion>0.0.1.0</FileVersion>
     </PropertyGroup>
 </Project>
diff --git a/Directory.Build.targets b/Directory.Build.targets
new file mode 100644
index 0000000..ccae6d7
--- /dev/null
+++ b/Directory.Build.targets
@@ -0,0 +1,16 @@
+<Project>
+  <!--
+    The CI workflows stamp a date-based version into build.yaml (e.g. 1.0.20260729.42). The build
+    segment (20260729) exceeds the 16-bit limit (0-65535) that AssemblyVersion and FileVersion
+    require, which fails the compile with CS7034/CS7035 if it ever reaches those properties.
+
+    Directory.Build.targets is imported after the project and after Directory.Build.props, and no
+    workflow rewrites it, so pinning valid assembly identities here keeps the build safe. Only the
+    .NET assembly identity is normalised; the plugin manifest version is unaffected, and Jellyfin
+    identifies plugins by GUID plus manifest version rather than by assembly version.
+  -->
+  <PropertyGroup>
+    <AssemblyVersion>1.0.0.0</AssemblyVersion>
+    <FileVersion>1.0.0.0</FileVersion>
+  </PropertyGroup>
+</Project>
diff --git a/build.yaml b/build.yaml
index 7c5a937..8543fa9 100644
--- a/build.yaml
+++ b/build.yaml
@@ -1,7 +1,7 @@
 ---
 name: "Watched Together"
 guid: "aa3288a0-e8c1-43e2-8045-8c3411142a5b"
-version: "1.0.0.0"
+version: "0.0.1.0"
 targetAbi: "10.11.0.0"
 framework: "net9.0"
 overview: "One shared login for several people; watched state flows back to each member's own account"