diff --git a/project/plugins.sbt b/project/plugins.sbt
index 836cc287d..0dc240c58 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -11,7 +11,7 @@ plugins_(
 libs ++= Seq(
   "org.scala-sbt" %% "scripted-plugin" % sbtVersion.value,
   compilerPlugin("org.scalamacros" % "paradise" % "2.1.0" cross CrossVersion.full), // for shapeless / auto type class derivations
-  "com.github.alexarchambault" %% "argonaut-shapeless_6.2" % "1.2.0-M8"
+  "com.github.alexarchambault" %% "argonaut-shapeless_6.2" % "1.2.0-M9"
 )
 
 // required for just released things