diff --git a/test/Project.toml b/test/Project.toml
index 70cbbf4..1e18cfb 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -7,3 +7,6 @@ TOML = "fa267f1f-6049-4f14-aa54-33bafae1ed76"
 
 [sources]
 InteractiveGMT = {path = ".."}
+
+[compat]
+TOML = "1.0.3"