diff --git a/.ocamlformat b/.ocamlformat
index c54116a..74ae9c5 100644
--- a/.ocamlformat
+++ b/.ocamlformat
@@ -1,4 +1,4 @@
-version=0.24.1
+version=0.26.1
 assignment-operator=end-line
 break-cases=fit
 break-fun-decl=wrap
diff --git a/example/main.ml b/example/main.ml
index 43b9fcd..4a90920 100644
--- a/example/main.ml
+++ b/example/main.ml
@@ -8,5 +8,5 @@ let () =
   Leaflet.Layer.add_to map osm_layer;
 
   (* set view *)
-  let latlng = Leaflet.Latlng.create 40.71 (-74.0) in
+  let latlng = Leaflet.Latlng.create ~lat:40.71 ~lng:(-74.0) in
   ignore @@ Leaflet.Map.set_view latlng ~zoom:(Some 13) map
diff --git a/src/latlng.ml b/src/latlng.ml
index 400200b..89cd3b8 100644
--- a/src/latlng.ml
+++ b/src/latlng.ml
@@ -2,7 +2,7 @@
 
 type t = Jv.t
 
-let create lat lng =
+let create ~lat ~lng =
   Jv.call Global.leaflet "latLng" [| Jv.of_float lat; Jv.of_float lng |]
 
 let lat latlng = Jv.get latlng "lat" |> Jv.to_float
diff --git a/src/latlng.mli b/src/latlng.mli
index 120d165..3bff192 100644
--- a/src/latlng.mli
+++ b/src/latlng.mli
@@ -4,7 +4,7 @@ type t
 
 (** [create lat lng] is an object representing a geographical point with the
     given latitude and longitude *)
-val create : float -> float -> t
+val create : lat:float -> lng:float -> t
 
 (** [lat o] is the latitude of [o] *)
 val lat : t -> float