diff --git a/project/plugins.sbt b/project/plugins.sbt
index 090151a..83a84eb 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
-addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.10")
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.1.1")
 addSbtPlugin("com.eed3si9n" % "sbt-unidoc" % "0.4.2")
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "2.5")
 addSbtPlugin("com.jsuereth" % "sbt-pgp" % "1.1.2")