diff --git a/build.sbt b/build.sbt
index 9f0841a2be..f824c9a5f9 100644
--- a/build.sbt
+++ b/build.sbt
@@ -450,7 +450,7 @@ lazy val core: ProjectMatrix = (projectMatrix in file("core"))
     libraryDependencies ++= {
       CrossVersion.partialVersion(scalaVersion.value) match {
         case Some((3, _)) =>
-          Seq("com.softwaremill.magnolia1_3" %%% "magnolia" % "1.3.18")
+          Seq("com.softwaremill.magnolia1_3" %%% "magnolia" % "1.3.20")
         case _ =>
           Seq(
             "com.softwaremill.magnolia1_2" %%% "magnolia" % "1.1.13",