diff --git a/I/ITensorBase/Versions.toml b/I/ITensorBase/Versions.toml
index b1e7a1d..085da6f 100644
--- a/I/ITensorBase/Versions.toml
+++ b/I/ITensorBase/Versions.toml
@@ -221,3 +221,6 @@ git-tree-sha1 = "07a1cfe65990943461b81a041c148a95a60a4a7e"
 
 ["0.5.19"]
 git-tree-sha1 = "c07271d2d5d9984041458c8b54748fa0175af845"
+
+["0.5.20"]
+git-tree-sha1 = "56080e20f9719f691192a31cf5cdccbb83456d91"