diff --git a/requirements.txt b/requirements.txt
index d56a228..2196ddf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ MarkupSafe==0.23
 mock==1.3.0
 nose==1.3.7
 pbr==1.8.1
-pycparser==2.14
+pycparser==2.21
 pytz==2015.7
 requests==2.8.1
 selenium==2.48.0