diff --git a/nbproject/project.properties b/nbproject/project.properties
index f80c2ec8a8..d288f226cc 100644
--- a/nbproject/project.properties
+++ b/nbproject/project.properties
@@ -4,7 +4,7 @@ app.title=Autopsy
 ### lowercase version of above
 app.name=${branding.token}
 ### if left unset, version will default to today's date
-app.version=3.1.3
+app.version=4.0.0
 ### Build type isn't used at this point, but it may be useful
 ### Must be one of: DEVELOPMENT, RELEASE
 #build.type=RELEASE