diff --git a/README.md b/README.md
index a13a37e..1dd387b 100644
--- a/README.md
+++ b/README.md
@@ -96,4 +96,6 @@ https://github.com/tc39/proposal-cancelable-promises/issues/70
 
 https://github.com/twitter/scrooge/issues/222
 
+https://github.com/vcflib/vcflib/issues/206
+
 https://github.com/zenparsing/es-observable/pull/97