diff --git a/Project.toml b/Project.toml
index d2c46fc..d3b2a7f 100644
--- a/Project.toml
+++ b/Project.toml
@@ -32,7 +32,7 @@ GenericLinearAlgebra = "0.3"
 HSL = "0.4"
 JSON = "0.21"
 MathOptInterface = "1.20"
-Pardiso = "0.5"
+Pardiso = "0.5, 1"
 QDLDL = "0.4.1"
 Requires = "1"
 SnoopPrecompile = "1"