diff --git a/tools/build/onos-buck b/tools/build/onos-buck
index 9ed162b..7d4b174 100755
--- a/tools/build/onos-buck
+++ b/tools/build/onos-buck
@@ -5,8 +5,8 @@
 
 set -e
 
-BUCK_URL="http://onlab.vicci.org/onos/third-party/buck-v2017.08.24.01.zip"
-BUCK_SHA="3b8dcb39f8ece99db3b4e77815b1ddf05e04d77a"
+BUCK_URL="http://onlab.vicci.org/onos/third-party/buck-v2017.09.01.01.zip"
+BUCK_SHA="9addcfd68518ee51b8f08135a7828b38dffb8fe5"
 
 [  "-U" = "$1" ] && shift && FORCE_UPDATE=True
 
diff --git a/tools/dev/bin/patch-yang-libs b/tools/dev/bin/patch-yang-libs
index 89ebeb6..0522d9e 100755
--- a/tools/dev/bin/patch-yang-libs
+++ b/tools/dev/bin/patch-yang-libs
@@ -3,8 +3,8 @@
 # Patches lib/BUCK file to use locally built YANG tools.
 # -----------------------------------------------------------------------------
 
-BVER=2.2.0-b6
-SVER=2.2-SNAPSHOT
+BVER=2.2.0
+SVER=2.3-SNAPSHOT
 
 YANG_TOOLS_ROOT=${YANG_TOOLS_ROOT:-~/onos-yang-tools}