diff --git a/src/sbt-test/shading/scalasigannot/build.sbt b/src/sbt-test/shading/scalasigannot/build.sbt
index a6444ba..91fe73f 100644
--- a/src/sbt-test/shading/scalasigannot/build.sbt
+++ b/src/sbt-test/shading/scalasigannot/build.sbt
@@ -8,7 +8,7 @@ lazy val scala213 = "2.13.11"
 ThisBuild / crossScalaVersions := List(scala212, scala213)
 
 
-val shadingSettings: Seq[Def.Setting[_]] = Seq(
+val shadingSettings: Seq[Def.Setting[?]] = Seq(
   exportJars := false,
   assembly / assemblyShadeRules := Seq(
     ShadeRule.rename(