diff --git a/test/runtests.jl b/test/runtests.jl
index 08d5a763..ff29ceaa 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -70,7 +70,7 @@ include("imgcomp.jl")
 Random.seed!(PLOTS_SEED)
 default(show=false, reuse=true)
 is_ci() = get(ENV, "CI", "false") == "true"
-const PLOTS_IMG_TOL = parse(Float64, get(ENV, "PLOTS_IMG_TOL", is_ci() ? "1e-3" : "1e-5"))
+const PLOTS_IMG_TOL = parse(Float64, get(ENV, "PLOTS_IMG_TOL", is_ci() ? "1e-3" : "1e-4"))
 
 ## Uncomment the following lines to update reference images for different backends