diff --git a/requirements.txt b/requirements.txt
index 9b8f49326..18047cf2d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ oslo.log>=1.14.0 # Apache-2.0
 oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0
 oslo.utils>=3.16.0 # Apache-2.0
-pecan>=1.0.0 # BSD
+pecan!=1.0.2,!=1.0.3,!=1.0.4,>=1.0.0 # BSD
 Pint>=0.5 # BSD
 psutil<2.0.0,>=1.1.1 # BSD
 pyudev # LGPLv2.1+