diff --git a/build.sbt b/build.sbt
index 049e9c3..73e73af 100644
--- a/build.sbt
+++ b/build.sbt
@@ -13,7 +13,7 @@ developers += Developer(
   url("https://github.com/playframework")
 )
 
-addSbtJsEngine("1.3.7")
+addSbtJsEngine("1.3.9")
 
 libraryDependencies ++= Seq(
   "org.webjars.npm" % "uglify-js" % "3.17.4",
diff --git a/project/build.properties b/project/build.properties
index 081fdbb..ee4c672 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.10.0
+sbt.version=1.10.1
diff --git a/sbt-uglify-tester/project/build.properties b/sbt-uglify-tester/project/build.properties
index 081fdbb..ee4c672 100755
--- a/sbt-uglify-tester/project/build.properties
+++ b/sbt-uglify-tester/project/build.properties
@@ -1 +1 @@
-sbt.version=1.10.0
+sbt.version=1.10.1