diff --git a/test/runtests.jl b/test/runtests.jl
index ab06a5e..6cdf503 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,3 +1,6 @@
 using Pkg
 
+if VERSION >= v"1.5"
+    Pkg.develop(path="../SwapLiterals")
+end
 Pkg.test("SwapLiterals")