diff --git a/README.md b/README.md
index 1905872..56ca85a 100644
--- a/README.md
+++ b/README.md
@@ -94,4 +94,6 @@ 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