diff --git a/project/build.properties b/project/build.properties
index e8a1e246..abbbce5d 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.7
+sbt.version=1.9.8
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 3e56ff30..6bc32924 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -2,7 +2,7 @@ resolvers ++= DefaultOptions.resolvers(snapshot = true)
 resolvers ++= Resolver
   .sonatypeOssRepos("snapshots") // used by deploy nightlies, which publish here & use -Dplay.version
 
-addSbtPlugin("com.typesafe.play" % "play-docs-sbt-plugin" % sys.props.getOrElse("play.version", "2.9.0"))
+addSbtPlugin("com.typesafe.play" % "play-docs-sbt-plugin" % sys.props.getOrElse("play.version", "2.9.1"))
 
 addSbtPlugin("org.scalameta"     % "sbt-scalafmt"    % "2.5.2")
 addSbtPlugin("com.typesafe"      % "sbt-mima-plugin" % "1.1.3")