diff --git a/Project.toml b/Project.toml
index 89b7314..bdcaf48 100644
--- a/Project.toml
+++ b/Project.toml
@@ -13,11 +13,13 @@ Aqua = "0.6"
 Statistics = "1"
 StatsBase = "0.33, 0.34"
 StatsModels = "0.7"
+TestSetExtensions = "3"
 julia = "1.6"
 
 [extras]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+TestSetExtensions = "98d24dd4-01ad-11ea-1b02-c9a08f80db04"
 
 [targets]
-test = ["Aqua", "Test"]
+test = ["Aqua", "Test", "TestSetExtensions"]
diff --git a/test/runtests.jl b/test/runtests.jl
index bb3bbaf..765a99d 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -4,10 +4,11 @@ using StatsModels
 using StatsBase
 using Statistics
 using Test
+using TestSetExtensions
 
 string_mime(mime, x) = sprint(show, mime, x)
 
-@testset "StandardizedPredictors.jl" begin
+@testset ExtendedTestSet "StandardizedPredictors.jl" begin
     @testset "Aqua" begin
         # technically we're pirating StatsBase.zscore(::AbstractTerm)
         Aqua.test_all(StandardizedPredictors; ambiguities=false, piracy=false)