diff --git a/Project.toml b/Project.toml
index 7469ad4..5cbd7ec 100644
--- a/Project.toml
+++ b/Project.toml
@@ -8,6 +8,7 @@ julia = "1"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+SaferIntegers = "88634af6-177f-5301-88b8-7819386cfa38"
 
 [targets]
-test = ["Test"]
+test = ["Test", "SaferIntegers"]
diff --git a/test/runtests.jl b/test/runtests.jl
index 56d6fff..0e234d3 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -288,3 +288,16 @@ end
     @test @unchecked(1 + 4 + 5 + typemax(Int)) == 10 + typemax(Int)
     @test @checked(1.0 + 4 + 5 + typemax(Int)) == 9.223372036854776e18
 end
+
+using SaferIntegers
+
+@testset "Ensure SaferIntegers are still safer" begin
+    @test_throws OverflowError typemax(SafeInt) + 1
+    @test_throws OverflowError @unchecked typemax(SafeInt) + 1
+    (@__MODULE__).eval(:(
+        module UncheckedDefaultSaferIntStillChecksModule
+            using OverflowContexts, SaferIntegers, Test
+            @default_unchecked
+            @test_throws OverflowError typemax(SafeInt) + 1
+        end))
+end