diff --git a/README.md b/README.md
index 6bddd6c08..b2bc6ed66 100644
--- a/README.md
+++ b/README.md
@@ -143,7 +143,7 @@ $ ./usertools/dpdk-devbind.py -b uio_pci_generic 0000:06:00.0
 
 ## Build DPVS
 
-It's simple, just set `RTE_SDK` and build it.
+It's simple, just set `PKG_CONFIG_PATH` and build it.
 
 ```bash
 $ export PKG_CONFIG_PATH=<path-of-libdpdk.pc>  # normally located at dpdklib/lib64/pkgconfig/libdpdk.pc
diff --git a/src/Makefile b/src/Makefile
index 63d5e0646..1ef63e5ea 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -35,7 +35,7 @@ DATE_STRING := $(shell date +%Y.%m.%d.%H:%M:%S)
 SRCDIR := $(dir $(realpath $(firstword $(MAKEFILE_LIST))))
 
 # Addtional libs below are needed when using dynamic link.
-# LIBS += -lpthread -lnuma -lrt -lm -ldl -lcrypto -lpcap
+LIBS += -lpthread -lnuma -lrt -lm -ldl -lcrypto
 
 include $(SRCDIR)/config.mk
 include $(SRCDIR)/dpdk.mk
diff --git a/src/VERSION b/src/VERSION
index 76f9440e2..8b6c402ce 100755
--- a/src/VERSION
+++ b/src/VERSION
@@ -1,33 +1,33 @@
 #!/bin/sh -
 # program: dpvs
-# Apr 26, 2021
+# Jul 28, 2021
+#
+# Major changes:
+#   - Adapt dpvs to dpdk 20.11 (dpdk-stable-20.11.1).
+#   - Create branch DPVS-1.8-LTS to support dpdk 18.11.
+#   - Obsolete supports for dpdk 17.11.
+#
+# Featurs:
+#   - Dpvs: Add netif_flow module using generic flow api (rte_flow), and replace flow director with rte_flow.
+#   - Dpvs: Replace mbuf userdata with mbuf dynfields.
+#   - Dpvs: Adapt dpvs to several renamed type names in dpdk 20.11.
+#   - Dpvs: Update Makefiles to support dpdk 20.11.
+#   - Dpvs: Add config option "dedicated_queues" for bonding mode 4 (802.3ad).
+#   - Dpdk: Add helper script to facilitate dpdk build.
+#   - Dpdk: Porting patches to dpdk 20.11 and remove patches of previous dpdk versions (18.11, 17.11).
+#   - Dpdk: Patch dpdk ixgbe pmd driver to support dpvs's flow api.
+#   - Dpdk: Patch dpdk bonding mode 4 for mlx5 to fix crash problem when debug.
+#   - Keeaplived: Add UDP_CHECK health checker.
+#   - Docs: Refine tutorial doc of section 'Full-NAT with Keepalived (one-arm)'.
+#   - Docs: Update docs for dpvs use with dpdk 20.11.
+#   - Ci: Update dpvs ci to support dpdk 20.11.
+#
+# Bugfix:
+#   - Dpvs: Fix ipvs rr/wrr/wlc problem of uneven load distribution across dests.
+#   - Dpvs: Fix bonding mode 4 problem caused by LACP failure.
 #
-# Features
-# ----------
-# - CI: Enable CI workflow.
-# - Dpvs: TC stability and performance enhancement.
-# - Dpvs: TC supports ipv6 and ingress traffic.
-# - Dpvs: Add document and examples for dpvs tc.
-# - Dpvs: Add supports for ipvs whitelist.
-# - Dpvs: Support icmp forwarding with icmp_fwd_core.
-# - Dpvs: Support mtu config.
-# - Dpvs: Obsolete dpdk 16.07 and 17.05.02.
-# - Patch: Add eal memory debug patch for dpdk-stable-18.11.2.
-# 
-# # Bugfix
-# --------
-# - Dpvs: Fix traceroute problem of dpvs ip address.
-# - Dpvs: Fix flags conflicts for ipvs conn/service/dest.
-# - Dpvs: Reset tcp connection when syn-cookie check fails.
-# - Dpvs: Use correct mbuf:l4_len for checkout offload.
-# - Dpvs: Fix udp checksum problem for uoa when checksum offload is off.
-# - Dpvs: Simplify checksum calculations and remove superfluous checksum functions.
-# - Dpvs: Refactor netif recv procedure.
-# - Dpvs: Fix debug level log problem.
-# - Keepalived: Fix problem that local ip config doesn't take effect when restart.
-# - Keepalived: Fix crash problem when tunnel is configured.
 
-export VERSION=1.8
-export RELEASE=10
+export VERSION=1.9
+export RELEASE=0
 
 echo $VERSION-$RELEASE