diff --git a/Project.toml b/Project.toml
index 815287d..e5b828a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,9 +12,9 @@ Symbolics = "0c5d862f-8b57-4792-8d23-62f2024744c7"
 
 [compat]
 Format = "1"
-OrderedCollections = "1"
-Symbolics = "5"
 MacroTools = "0.5"
+OrderedCollections = "1"
+Symbolics = "5, 6"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"