diff --git a/C/ChainRulesCore/Versions.toml b/C/ChainRulesCore/Versions.toml
index 9986a41381651c8..078d29b761779d1 100644
--- a/C/ChainRulesCore/Versions.toml
+++ b/C/ChainRulesCore/Versions.toml
@@ -81,3 +81,6 @@ git-tree-sha1 = "8013d73583b79df2b5d8fc71e3c43f9246477fea"
 
 ["0.9.8"]
 git-tree-sha1 = "cd464e38276e956cd1112c5df96851659f888b11"
+
+["0.9.9"]
+git-tree-sha1 = "dda27ab79311f4d6e1ebff192b92d78837a6d0eb"