diff --git a/config/src/bloop/config/Config.scala b/config/src/bloop/config/Config.scala
index 98f39a2..17ac692 100644
--- a/config/src/bloop/config/Config.scala
+++ b/config/src/bloop/config/Config.scala
@@ -384,7 +384,8 @@ object Config {
       sourcesGlobs: List[SourcesGlobs],
       outputDirectory: Path,
       command: List[String],
-      @unroll unmanagedInputs: List[Path] = Nil
+      @unroll unmanagedInputs: List[Path] = Nil,
+      @unroll commandTemplate: Option[List[String]] = None
   )
 
   object SourceGenerator extends SourceGeneratorCompanionPlatform