diff --git a/requirements.txt b/requirements.txt
index 0267e2d21..8e390a0c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ oslo.service>=1.10.0 # Apache-2.0
 osprofiler>=1.4.0 # Apache-2.0
 paramiko>=2.0 # LGPLv2.1+
 pbr>=1.6 # Apache-2.0
-pecan>=1.0.0 # BSD
+pecan!=1.0.2,!=1.0.3,!=1.0.4,>=1.0.0 # BSD
 python-barbicanclient>=4.0.0 # Apache-2.0
 python-ceilometerclient>=2.5.0 # Apache-2.0
 python-cinderclient!=1.7.0,!=1.7.1,>=1.6.0 # Apache-2.0