diff --git a/Project.toml b/Project.toml
index 43d2edc..e1ffb1d 100644
--- a/Project.toml
+++ b/Project.toml
@@ -13,8 +13,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 julia = "1"
 
 [extras]
-Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Test", "Random"]
+test = ["Test"]
diff --git a/test/runtests.jl b/test/runtests.jl
index 243c6a7..9a25ba1 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,5 +1,4 @@
 using Test
-using Random
 using LightGraphs
 using PeriodicGraphs
 import PeriodicGraphs: ofs, vertex_permutation, LoopException
@@ -8,6 +7,13 @@ import StaticArrays: SVector
 # using Aqua
 # Aqua.test_all(PeriodicGraphs)
 
+@static if VERSION < v"1.4-"
+    function only(t)
+        length(t) == 1 || throw(ArgumentError("Not exactly 1 element"))
+        return t[1]
+    end
+end
+
 @testset "PeriodicVertex" begin
     @test_throws MethodError PeriodicVertex2D() # Always require a vertex identifier
     @test iszero(ofs(PeriodicVertex2D(1)))
@@ -238,6 +244,7 @@ end
     @test collect(edges(g)) == edgs
 end
 
+
 @testset "Neighbors" begin
     g = PeriodicGraph3D(1)
     @test add_vertices!(g, 2) == 2