diff --git a/build.sbt b/build.sbt
index 04cc1f9..a72f881 100644
--- a/build.sbt
+++ b/build.sbt
@@ -120,8 +120,8 @@ lazy val protege = project
     ),
     libraryDependencies ++= Seq(
       "net.sourceforge.owlapi" % "owlapi-distribution" % owlapiVersion % Provided,
-      "edu.stanford.protege" % "protege-editor-core" % "5.5.0" % Provided,
-      "edu.stanford.protege" % "protege-editor-owl" % "5.5.0" % Provided
+      "edu.stanford.protege" % "protege-editor-core" % "5.6.6" % Provided,
+      "edu.stanford.protege" % "protege-editor-owl" % "5.6.6" % Provided
     )
   )