diff --git a/benchmarks/AstroChem/Project.toml b/benchmarks/AstroChem/Project.toml
index c3abdc2bd..c0dffeb9c 100644
--- a/benchmarks/AstroChem/Project.toml
+++ b/benchmarks/AstroChem/Project.toml
@@ -22,5 +22,6 @@ LSODA = "0.7"
 NaNMath = "1"
 ODEInterface = "0.5"
 OrdinaryDiffEq = "6"
+OrdinaryDiffEqCore = "1"
 Plots = "1"
 Sundials = "4"