diff --git a/Project.toml b/Project.toml
index 057d46a8e..dd71fc5f9 100644
--- a/Project.toml
+++ b/Project.toml
@@ -29,7 +29,7 @@ DataFrames = "0.22, 1.0"
 DelimitedFiles = "1"
 Dierckx = "0.5"
 Distributions = "0.24, 0.25"
-DynamicPolynomials = "0.4.5"
+DynamicPolynomials = "0.4.5, 0.5"
 FastGaussQuadrature = "0.4, 0.5"
 FiniteDifferences = "0.12"
 Formatting = "0.4"