diff --git a/.ocamlformat b/.ocamlformat
index cf8f21af..484d5d0d 100644
--- a/.ocamlformat
+++ b/.ocamlformat
@@ -1,6 +1,7 @@
 profile = default
-margin = 100
+margin = 80
 exp-grouping = preserve
+break-fun-decl = smart
 wrap-comments
 parse-docstrings
-version=0.19.0
+version=0.20.1
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index f56ebf0d..d5fd3af5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -89,7 +89,7 @@ You can look at the
 [online OCaml documentation](https://catala-lang.org/ocaml_docs/) for the
 different modules' interfaces as well as high-level architecture documentation.
 
-Please note that the `ocamlformat` version this project uses is `0.19.0`.
+Please note that the `ocamlformat` version this project uses is `0.20.1`.
 Using another version may cause spurious diffs to appear in your pull requests.
 
 ### Example: adding a builtin function
diff --git a/catala.opam b/catala.opam
index 9e1f1152..bcb16cf0 100644
--- a/catala.opam
+++ b/catala.opam
@@ -40,7 +40,7 @@ depends: [
   "cppo" {>= "1"}
   "obelisk" {dev}
   "alcotest" {with-test & >= "1.5.0"}
-  "ocamlformat" {dev & = "0.19.0"}
+  "ocamlformat" {dev & = "0.20.1"}
   "odoc" {with-doc}
 ]
 build: [
diff --git a/dune-project b/dune-project
index 5c01f455..4facb1cb 100644
--- a/dune-project
+++ b/dune-project
@@ -80,7 +80,7 @@
   (ocamlformat
    (and
     :dev
-    (= 0.19.0)))))
+    (= 0.20.1)))))
 
 (package
  (name french_law)