diff --git a/C/ChainRulesTestUtils/Versions.toml b/C/ChainRulesTestUtils/Versions.toml
index d61fcc0c4bf58cc..76c3a11d7a1ab0e 100644
--- a/C/ChainRulesTestUtils/Versions.toml
+++ b/C/ChainRulesTestUtils/Versions.toml
@@ -183,3 +183,6 @@ git-tree-sha1 = "900b5ba6c7d9913ea2f443b216350dd6dda9822a"
 
 ["1.2.0"]
 git-tree-sha1 = "bf0d466797839087ca2238e937981b588dedbcb0"
+
+["1.2.1"]
+git-tree-sha1 = "a69af81dcc1970d98355a5f2f1183d0c1e9fefc8"