diff --git a/tools/oldest_constraints.txt b/tools/oldest_constraints.txt
index 6154b497a..85d058796 100644
--- a/tools/oldest_constraints.txt
+++ b/tools/oldest_constraints.txt
@@ -13,7 +13,6 @@ ply==3.4
 pyasn1==0.1.9
 pycparser==2.14
 pyOpenSSL==0.13.1
-pyparsing==1.5.6
 pyRFC3339==1.0
 python-augeas==0.5.0
 oauth2client==4.0.0