diff --git a/Project.toml b/Project.toml
index 82bacd7..284a596 100644
--- a/Project.toml
+++ b/Project.toml
@@ -9,7 +9,7 @@ SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
 
 [compat]
 Calculus = "0.5"
-NaNMath = "0.3"
+NaNMath = "0.3, 1"
 SpecialFunctions = "0.7, 0.8, 0.9, 0.10, 1.0, 2"
 julia = "0.7, 1.0"