diff --git a/Y/Yao/Versions.toml b/Y/Yao/Versions.toml
index 1edbbc2212f58a9..4c9b16877abe5bb 100644
--- a/Y/Yao/Versions.toml
+++ b/Y/Yao/Versions.toml
@@ -78,3 +78,6 @@ git-tree-sha1 = "c23c27ba3186a6558ff8bc3f4b7bc16e5af76c1e"
 
 ["0.8.3"]
 git-tree-sha1 = "cb1ad7702080ade4a1c7e3c22c6defcb3ecf9ee8"
+
+["0.8.4"]
+git-tree-sha1 = "2c8959cbf575101dd300d8128fba0c04d09c77e7"