diff --git a/M/ModelingToolkit/Versions.toml b/M/ModelingToolkit/Versions.toml
index 8c78db134d43144..89ffca77e990561 100644
--- a/M/ModelingToolkit/Versions.toml
+++ b/M/ModelingToolkit/Versions.toml
@@ -24,3 +24,6 @@ git-tree-sha1 = "f9972803e386fbd72dc28d7a5674e28ddf82cf0e"
 
 ["0.6.3"]
 git-tree-sha1 = "41204dc3ffc1371fe5bcc88a290935096d3c09fe"
+
+["0.6.4"]
+git-tree-sha1 = "2cee0f3f7b062867193fee3e182ccbcfe991c1b8"