diff --git a/C/Circuitscape/Versions.toml b/C/Circuitscape/Versions.toml
index 87f2f379efa77c0..6a132d3985bc1a7 100644
--- a/C/Circuitscape/Versions.toml
+++ b/C/Circuitscape/Versions.toml
@@ -66,3 +66,6 @@ git-tree-sha1 = "880df0c3f7da0453f5062b2dab232e01a2e326b5"
 
 ["5.12.0"]
 git-tree-sha1 = "8dc67e142456ddd61884ae80b00e07d7c61f19e6"
+
+["5.12.1"]
+git-tree-sha1 = "3e0c58f2bf76802dd4cbb2f46659a16cdd248c1c"