diff --git a/project/OmnidocBuild.scala b/project/OmnidocBuild.scala
index bac3fbe..2a61941 100644
--- a/project/OmnidocBuild.scala
+++ b/project/OmnidocBuild.scala
@@ -21,7 +21,7 @@ object OmnidocBuild {
 
   val playVersion              = sys.props.getOrElse("play.version",               "3.0.0-M3")
   val scalaTestPlusPlayVersion = sys.props.getOrElse("scalatestplus-play.version", "7.0.0-M1")
-  val playJsonVersion          = sys.props.getOrElse("play-json.version",          "3.0.0-M1")
+  val playJsonVersion          = sys.props.getOrElse("play-json.version",          "3.0.0")
   val playSlickVersion         = sys.props.getOrElse("play-slick.version",         "6.0.0-M1")
   val maybeTwirlVersion        = sys.props.get("twirl.version")