diff --git a/test/runtests.jl b/test/runtests.jl
index 1a9328c6..b15a5a6e 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -5,7 +5,7 @@ using Statistics: mean
 
 using StaticArrays: MVector, @SVector, SA
 
-using Unitful: @u_str
+using Unitful: @u_str, ustrip
 
 using OrdinaryDiffEq
 using PositiveIntegrators