diff --git a/docs/mod-build-config.md b/docs/mod-build-config.md
index 87e0cf30..9121c175 100644
--- a/docs/mod-build-config.md
+++ b/docs/mod-build-config.md
@@ -49,6 +49,12 @@ non-mod projects like unit tests, you can set this property:
 <CopyModReferencesToBuildOutput>true</CopyModReferencesToBuildOutput>
 ```
 
+If your mod uses [Harmony](https://github.com/pardeike/Harmony) (not recommended for most mods),
+the package can add a reference to SMAPI's Harmony DLL for you:
+```xml
+<EnableHarmony>true</EnableHarmony>
+```
+
 ### Copy files into the `Mods` folder and create release zip
 <dl>
 <dt>Files considered part of your mod</dt>
@@ -269,6 +275,7 @@ If you need to copy the referenced DLLs into your build output, add this too:
   * added GAC to assembly search paths to fix references to XNA Framework.
 * Added option to disable game debugging config.
 * Added `.pdb` files to builds by default (to enable line numbers in error stack traces).
+* Added optional Harmony reference.
 * Fixed `Newtonsoft.Json.pdb` included in release zips when Json.NET is referenced directly.
 * Fixed `<IgnoreModFilePatterns>` not working for `i18n` files.
 * Dropped support for older versions of SMAPI and Visual Studio.
diff --git a/src/SMAPI.ModBuildConfig/build/smapi.targets b/src/SMAPI.ModBuildConfig/build/smapi.targets
index 1f512400..0daf40a1 100644
--- a/src/SMAPI.ModBuildConfig/build/smapi.targets
+++ b/src/SMAPI.ModBuildConfig/build/smapi.targets
@@ -24,6 +24,7 @@
     <ModZipPath Condition="'$(ModZipPath)' == ''">$(TargetDir)</ModZipPath>
     <EnableModDeploy Condition="'$(EnableModDeploy)' == ''">true</EnableModDeploy>
     <EnableModZip Condition="'$(EnableModZip)' == ''">true</EnableModZip>
+    <EnableHarmony Condition="'$(EnableModZip)' == ''">false</EnableHarmony>
     <EnableGameDebugging Condition="$(EnableGameDebugging) == ''">true</EnableGameDebugging>
     <CopyModReferencesToBuildOutput Condition="'$(CopyModReferencesToBuildOutput)' == ''">false</CopyModReferencesToBuildOutput>
   </PropertyGroup>
@@ -32,6 +33,13 @@
   <!--*********************************************
   ** Inject the assembly references and debugging configuration
   **********************************************-->
+  <ItemGroup>
+    <Reference Include="0Harmony" Condition="'$(EnableHarmony)' == 'true'">
+      <HintPath>$(GamePath)\smapi-internal\0Harmony.dll</HintPath>
+      <Private>false</Private>
+      <Private Condition="$(CopyModReferencesToBuildOutput)">true</Private>
+    </Reference>
+  </ItemGroup>
   <Choose>
     <When Condition="$(OS) == 'Windows_NT'">
       <!-- references -->
diff --git a/src/SMAPI.ModBuildConfig/package.nuspec b/src/SMAPI.ModBuildConfig/package.nuspec
index 60f14efe..524cadfd 100644
--- a/src/SMAPI.ModBuildConfig/package.nuspec
+++ b/src/SMAPI.ModBuildConfig/package.nuspec
@@ -22,6 +22,7 @@
         - added GAC to assembly search paths to fix references to XNA Framework.
       - Added option to disable game debugging config.
       - Added `.pdb` files to builds by default (to enable line numbers in error stack traces).
+      - Added optional Harmony reference.
       - Fixed `Newtonsoft.Json.pdb` included in release zips when Json.NET is referenced directly.
       - Fixed `&lt;IgnoreModFilePatterns&gt;` not working for `i18n` files.
       - Dropped support for older versions of SMAPI and Visual Studio.