diff --git a/packages/cultmath/scripts/build-unity-package.ps1 b/packages/cultmath/scripts/build-unity-package.ps1
index 7db1fbda..8c0cbb09 100644
--- a/packages/cultmath/scripts/build-unity-package.ps1
+++ b/packages/cultmath/scripts/build-unity-package.ps1
@@ -27,8 +27,10 @@ if (Test-Path -LiteralPath $outputRoot) {
   Remove-Item -LiteralPath $outputRoot -Recurse -Force
 }
 
+# The tracked DLL and pdb are committed beside their source, so neither may name a commit: Source Link
+# writes the commit SHA into the pdb, and the DLL carries that pdb's content id.
 dotnet build $projectPath -c $Configuration -f netstandard2.1 -o $buildRoot `
-  --disable-build-servers -p:UseSharedCompilation=false -p:ContinuousIntegrationBuild=true -m:1
+  --disable-build-servers -p:UseSharedCompilation=false -p:ContinuousIntegrationBuild=true -p:EnableSourceLink=false -m:1
 if ($LASTEXITCODE -ne 0) {
   throw "CultMath Unity assembly build failed with exit code $LASTEXITCODE"
 }
diff --git a/packages/cultmath/src/CultMath/CultMath.csproj b/packages/cultmath/src/CultMath/CultMath.csproj
index 5dfe069c..7c567105 100644
--- a/packages/cultmath/src/CultMath/CultMath.csproj
+++ b/packages/cultmath/src/CultMath/CultMath.csproj
@@ -14,6 +14,8 @@
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <NoWarn>$(NoWarn);CS8981</NoWarn>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <!-- The Unity DLL is committed beside its source, so its bytes must not name a commit. -->
+    <IncludeSourceRevisionInInformationalVersion>false</IncludeSourceRevisionInInformationalVersion>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.dll b/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.dll
index 28e9c939..0af117fb 100644
Binary files a/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.dll and b/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.dll differ
diff --git a/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.pdb b/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.pdb
index c2dc2446..a56960a0 100644
Binary files a/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.pdb and b/packages/cultmath/unity/org.gamecult.cultmath/Runtime/Plugins/CultMath.pdb differ