diff --git a/Directory.Build.props b/Directory.Build.props
index e37712c..c953f4a 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
   <PropertyGroup>
-    <Version>99.99.99</Version>
+    <Version>1.99.99</Version>
   </PropertyGroup>
 </Project>
diff --git a/src/Trax.Effect/Trax.Effect.csproj b/src/Trax.Effect/Trax.Effect.csproj
index 021f21f..a0e0399 100644
--- a/src/Trax.Effect/Trax.Effect.csproj
+++ b/src/Trax.Effect/Trax.Effect.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Trax.Core" Version="*" />
+    <PackageReference Include="Trax.Core" Version="1.*" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/tests/Trax.Effect.Tests.Benchmarks/Trax.Effect.Tests.Benchmarks.csproj b/tests/Trax.Effect.Tests.Benchmarks/Trax.Effect.Tests.Benchmarks.csproj
index 7dce1c0..3df6dac 100644
--- a/tests/Trax.Effect.Tests.Benchmarks/Trax.Effect.Tests.Benchmarks.csproj
+++ b/tests/Trax.Effect.Tests.Benchmarks/Trax.Effect.Tests.Benchmarks.csproj
@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.14.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.3" />
-    <PackageReference Include="Trax.Core" Version="*" />
+    <PackageReference Include="Trax.Core" Version="1.*" />
   </ItemGroup>
 
   <ItemGroup>