Update for Apache Mynewt 1.6.0 release
diff --git a/project.yml b/project.yml
index e02a059..9490951 100644
--- a/project.yml
+++ b/project.yml
@@ -27,6 +27,6 @@
 #
 repository.apache-mynewt-core:
     type: github
-    vers: 1-latest
+    vers: 1.6.0
     user: apache
     repo: mynewt-core