diff --git a/cranelift/.gitignore b/cranelift/.gitignore
index 5f3b8f2899..a230556d47 100644
--- a/cranelift/.gitignore
+++ b/cranelift/.gitignore
@@ -7,3 +7,4 @@ target
 Cargo.lock
 .*.rustfmt
 cretonne.dbg*
+.mypy_cache