diff --git a/src/passes/4-typer/dune b/src/passes/4-typer-new/dune
similarity index 100%
rename from src/passes/4-typer/dune
rename to src/passes/4-typer-new/dune
diff --git a/src/passes/4-typer/solver.ml b/src/passes/4-typer-new/solver.ml
similarity index 100%
rename from src/passes/4-typer/solver.ml
rename to src/passes/4-typer-new/solver.ml
diff --git a/src/passes/4-typer/typer.ml b/src/passes/4-typer-new/typer.ml
similarity index 100%
rename from src/passes/4-typer/typer.ml
rename to src/passes/4-typer-new/typer.ml
diff --git a/src/passes/4-typer/typer.ml.old b/src/passes/4-typer-new/typer.ml.old
similarity index 100%
rename from src/passes/4-typer/typer.ml.old
rename to src/passes/4-typer-new/typer.ml.old
diff --git a/src/passes/4-typer/typer.mli b/src/passes/4-typer-new/typer.mli
similarity index 100%
rename from src/passes/4-typer/typer.mli
rename to src/passes/4-typer-new/typer.mli