diff --git a/dns/elasticbeanstalk-takeover.yaml b/dns/elasticbeanstalk-takeover.yaml
index 336a08f87e..e61d34a556 100644
--- a/dns/elasticbeanstalk-takeover.yaml
+++ b/dns/elasticbeanstalk-takeover.yaml
@@ -35,7 +35,7 @@ dns:
     matchers:
       - type: regex
         regex:
-          - CNAME\t.*\.(us|af|ap|ca|eu|me|sa|il)\-(north|east|west|south|northeast|southeast|central)\-[1-9]+\.elasticbeanstalk\.com
+          - CNAME\t[a-z0-9_-]*\.(us|af|ap|ca|eu|me|sa|il)\-(north|east|west|south|northeast|southeast|central)\-[1-9]+\.elasticbeanstalk\.com
 
       - type: word
         words: