diff --git a/test/rrules.jl b/test/rrules.jl
index 978d5d26cc..54c7c22802 100644
--- a/test/rrules.jl
+++ b/test/rrules.jl
@@ -291,6 +291,8 @@ function plaquette_sum(U)
     return p
 end
 
+
+@static if VERSION >= v"1.9"
 @testset "No caching byref julia" begin
     U = Complex{Float64}[3.0 + 4.0im]
     dU = Complex{Float64}[0.0]
@@ -299,5 +301,5 @@ end
 
     @test dU[1] ≈ 7 * ( 3.0 + 4.0im )
 end
-
+end
 end # ReverseRules