diff --git a/devmachine/environment.sh b/devmachine/environment.sh
index 48e8282..5f603e8 100644
--- a/devmachine/environment.sh
+++ b/devmachine/environment.sh
@@ -10,7 +10,7 @@ export OSDBASE=$DEVMACHINE_BASE/ceph
 export ETCDBASE=$DEVMACHINE_BASE/etcd
 
 # which version of BTrDB and tools to install
-export VERSION=4.14.3
+export VERSION=4.15.3
 
 # pick which branch to use
 export PREFIX=""