diff --git a/project/plugins.sbt b/project/plugins.sbt
index 52386daf..9aaf4a2b 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,7 +1,7 @@
 addSbtPlugin("com.codecommit"               %% "sbt-github-packages"  % "0.5.3")
 addSbtPlugin("org.wartremover"              %% "sbt-wartremover"      % "3.1.6")
 addSbtPlugin("org.scalameta"                %% "sbt-scalafmt"         % "2.5.2")
-addSbtPlugin("com.disneystreaming.smithy4s" %% "smithy4s-sbt-codegen" % "0.17.19")
+addSbtPlugin("com.disneystreaming.smithy4s" %% "smithy4s-sbt-codegen" % "0.18.5")
 addSbtPlugin("com.typesafe.play"            %% "sbt-plugin"           % "2.9.1")
 addSbtPlugin("org.scoverage"                %% "sbt-scoverage"        % "2.0.9")