diff --git a/src/main/scala/buildo/ScalaSettingPlugin.scala b/src/main/scala/buildo/ScalaSettingPlugin.scala
index f863fea..75ab27c 100644
--- a/src/main/scala/buildo/ScalaSettingPlugin.scala
+++ b/src/main/scala/buildo/ScalaSettingPlugin.scala
@@ -34,7 +34,8 @@ object ScalaSettingPlugin extends AutoPlugin {
       "-Ywarn-value-discard",
       "-Ywarn-unused",
       "-Ywarn-unused-import",
-      "-Yrangepos"
+      "-Yrangepos",
+      "-Ypartial-unification"
     ) ++ crossFlags(scalaVersion.value),
     resolvers += Resolver.jcenterRepo
   )