diff --git a/bisect_ppx.opam b/bisect_ppx.opam
index 77a20062..81e422f5 100644
--- a/bisect_ppx.opam
+++ b/bisect_ppx.opam
@@ -25,7 +25,7 @@ depends: [
   "ppxlib" {>= "0.28.0"}
 
   "dune" {with-test & >= "3.0.0"}
-  "ocamlformat" {with-test & = "0.16.0"}
+  "ocamlformat" {with-test & = "0.27.0"}
 ]
 
 build: [