diff --git a/Project.toml b/Project.toml
index a39be7a..3a1c405 100644
--- a/Project.toml
+++ b/Project.toml
@@ -17,7 +17,7 @@ Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 ConstructionBase = "1.0"
 IterTools = "1.2, 1.3"
 LsqFit = "0.8, 0.9, 0.10"
-Polynomials = "0.5.2, 0.6, 0.7"
+Polynomials = "0.5.2, 0.6, 0.7, 0.8"
 Roots = "0.8, 1.0"
 Unitful = "0.18, 1.0"
 julia = "1"