diff --git a/metadata/freemap.opentrail.yml b/metadata/freemap.opentrail.yml
index 580a267989..f0fb85d67f 100644
--- a/metadata/freemap.opentrail.yml
+++ b/metadata/freemap.opentrail.yml
@@ -1,3 +1,5 @@
+AntiFeatures:
+  - NonFreeNet
 Categories:
   - Navigation
 License: GPL-2.0-only
@@ -16,6 +18,16 @@ Description: |-
     and download footpath issues (blockages, directions etc) and walking
     routes.
 
+    Antifeatures:
+    * NonFreeNet: The map data is OpenStreetMap-derived but it is downloaded
+    from the Freemap server. OpenTrail does not currently send any personal
+    information (such as your Google login) to the Freemap server. All data sent
+    is completely anonymous. Location tracking (GPS) is used to find your
+    location and to download nearby points of interest from the server. Server
+    requests (to find all points of interest close to a given GPS location) are
+    logged using standard server (Apache) logging; however they are not
+    associated with a username or name.
+
 RepoType: git
 Repo: https://gitlab.com/nickw1/opentrail.git
 
@@ -55,12 +67,10 @@ Builds:
       - yes
     srclibs:
       - andromaps@ec817a0b869ad41d0dc661bcca0b8595dc719003
-      - freemaplib@20170509
-      - freemaplibProj@20131013
-      - JCoord@328e75a8d44d9f6a13205994d3b9d3fd50f68867
-      - javaproj@b2167fa5aa64dce82867f7d96ac1462a4212c9df
-    prebuild: echo -e "\nproject(':andromaps').projectDir = new File('./app/$$andromaps$$/app/')"
-        >> ../settings.gradle
+      - freemaplib@d409e3db4b84509108e4e406f8b4e721d9223d1b
+      - freemaplibProj@a15388343b5cd0498efe70586c2c863a4870959f
+      - JCoord@aa4c5aa25fee1179c57817bbb2c7f61aa1c5328d
+      - javaproj@fecb0f3a6b52a4eb4e44889f10c07183cc592a3d
     build:
       - pushd $$freemaplib$$
       - $$MVN3$$ install