diff --git a/docs/_data/browser-bugs.yml b/docs/_data/browser-bugs.yml
index 2298dba991..5d85aaba43 100644
--- a/docs/_data/browser-bugs.yml
+++ b/docs/_data/browser-bugs.yml
@@ -218,6 +218,16 @@
   origin: >
     Bootstrap#17403
 
+-
+  browser: >
+    Safari
+  summary: >
+    `:hover` CSS pseudo-class sometimes keeps matching ever after mouse has left the element
+  upstream_bug: >
+    WebKit#158340
+  origin: >
+    Bootstrap#20012
+
 -
   browser: >
     Safari (OS X)