diff --git a/test/trajectory_tests/open_loop_parametric.jl b/test/trajectory_tests/open_loop_parametric.jl
index d6c454771..a8c535967 100644
--- a/test/trajectory_tests/open_loop_parametric.jl
+++ b/test/trajectory_tests/open_loop_parametric.jl
@@ -2,6 +2,7 @@ using FrankWolfe
 
 using Test
 using LinearAlgebra
+using SparseArrays
 
 @testset "Open-loop FW on polytope" begin
     n = Int(1e2)