diff --git a/benchmarks/SimpleHandwrittenPDE/Project.toml b/benchmarks/SimpleHandwrittenPDE/Project.toml
index d8f5a8697..d9073cb5d 100644
--- a/benchmarks/SimpleHandwrittenPDE/Project.toml
+++ b/benchmarks/SimpleHandwrittenPDE/Project.toml
@@ -28,4 +28,4 @@ Preconditioners = "0.6"
 SciMLBenchmarks = "0.1"
 SciMLOperators = "1"
 SummationByPartsOperators = "0.5"
-Sundials = "4.2"
+Sundials = "4.2, 5"