diff --git a/dune-project b/dune-project
index 55fe86a..c227eec 100644
--- a/dune-project
+++ b/dune-project
@@ -42,4 +42,4 @@
   (yojson
    (>= 1.6))
   (ocaml
-   (>= 4.08))))
+   (>= 5.2))))
diff --git a/get-activity-lib.opam b/get-activity-lib.opam
index 7cee692..a966219 100644
--- a/get-activity-lib.opam
+++ b/get-activity-lib.opam
@@ -15,7 +15,7 @@ depends: [
   "logs"
   "ppx_yojson_conv"
   "yojson" {>= "1.6"}
-  "ocaml" {>= "4.08"}
+  "ocaml" {>= "5.2"}
   "odoc" {with-doc}
 ]
 build: [