diff --git a/tools/build/onos-buck b/tools/build/onos-buck
index 91f0d07..2dbe477 100755
--- a/tools/build/onos-buck
+++ b/tools/build/onos-buck
@@ -5,9 +5,9 @@
 
 set -e
 
-BUCK_URL="https://github.com/bocon13/buck/releases/download/v2016.04.08.01/buck"
-BUCK_SHA="e22b6accd43cd3e928fe8e63256ebdc8f0b24cab"
-REQUIRED_VERSION="buck version ad0295088e5da2782062636ed97bd4f71c65bddd"
+BUCK_URL="https://github.com/bocon13/buck/releases/download/v2016.07.29.01-wip/buck"
+BUCK_SHA="31b2925f0c7935cd581b11a52f4e7fc53ade125e"
+REQUIRED_VERSION="buck version b1271d04f2c319784f8af9abc92ed2d01d10ed3a"
 
 [  "-U" = "$1" ] && shift && FORCE_UPDATE=True