Use Boost C++ >= 1.53.0
diff --git a/doc/install/centos.md b/doc/install/centos.md
index 3cf2399..609e118 100644
--- a/doc/install/centos.md
+++ b/doc/install/centos.md
@@ -54,11 +54,11 @@
sudo yum -y install libevent-devel zlib-devel openssl-devel
-### Upgrade Boost
+### Upgrade Boost >= 1.53
- wget http://sourceforge.net/projects/boost/files/boost/1.55.0/boost_1_55_0.tar.gz
- tar xvf boost_1_55_0.tar.gz
- cd boost_1_55_0
+ wget http://sourceforge.net/projects/boost/files/boost/1.53.0/boost_1_53_0.tar.gz
+ tar xvf boost_1_53_0.tar.gz
+ cd boost_1_53_0
./bootstrap.sh
sudo ./b2 install