diff --git a/tools/oldest_constraints.txt b/tools/oldest_constraints.txt
index 5d1446005..27d5bf288 100644
--- a/tools/oldest_constraints.txt
+++ b/tools/oldest_constraints.txt
@@ -29,7 +29,6 @@ zope.interface==4.0.5
 # Debian Jessie has reached end of life. However:
 # When it becomes necessary to upgrade any of these dependencies, you should only update them to the oldest version of the package found
 # in a non-EOL'd version of CentOS, Debian, or Ubuntu that has Certbot packages in their OS repositories.
-PyICU==1.8
 colorama==0.3.2
 enum34==1.0.3
 html5lib==0.999