diff --git a/test/SOS_correctness.jl b/test/SOS_correctness.jl
index e31fb77..f76f360 100644
--- a/test/SOS_correctness.jl
+++ b/test/SOS_correctness.jl
@@ -33,7 +33,7 @@
     @time sos_sqr = PropertyT.compute_SOS_square(pm, Q)
     @time sos_hpc = PropertyT.compute_SOS(pm, Q)
 
-    @test norm(sos_sqr - sos_hpc, 1) < 3e-12
+    @test norm(sos_sqr - sos_hpc, 1) < 4e-12
     @info "$NAME:\nDifference in l₁-norm between square and hpc sos decompositions:" norm(eoi-sos_sqr,1) norm(eoi-sos_hpc,1) norm(sos_sqr - sos_hpc, 1)
 
     #########################################################