diff --git a/dune-workspace.dev b/dune-workspace.dev
new file mode 100644
index 0000000..9a02cb0
--- /dev/null
+++ b/dune-workspace.dev
@@ -0,0 +1,5 @@
+(lang dune 1.2)
+(context (opam (switch 4.02.2)))
+(context (opam (switch 4.03.0)))
+(context (opam (switch 4.04.0)))
+(context (opam (switch default)))