diff --git a/C/CirculatorySystemModels/Versions.toml b/C/CirculatorySystemModels/Versions.toml
index a09d9695fbcc0df..9ae3e657b480112 100644
--- a/C/CirculatorySystemModels/Versions.toml
+++ b/C/CirculatorySystemModels/Versions.toml
@@ -21,3 +21,6 @@ git-tree-sha1 = "0bf61310842c195a9bc54d23625c6b9e8eb87884"
 
 ["0.3.0"]
 git-tree-sha1 = "ddc01c10b3c6353d71374fa3fb76ad7333040690"
+
+["0.3.1"]
+git-tree-sha1 = "de472e62b5063f393a132bbf13ba246c2c5b2d3b"