diff --git a/tools/pip-requires b/tools/pip-requires
index 47c6d02af..560200604 100644
--- a/tools/pip-requires
+++ b/tools/pip-requires
@@ -8,5 +8,5 @@ oslo.config>=2.5.0
 ovs>=2.6.0  # OVSDB
 routes  # wsgi
 six>=1.4.0
-tinyrpc  # RPC library, BGP speaker(net_cntl)
+tinyrpc==0.9.4  # RPC library, BGP speaker(net_cntl)
 webob>=1.2  # wsgi