diff --git a/README.md b/README.md
index 45c096b44..32ad37f92 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ notes contain a few details specific to Ocaml.
 
 **Prerequisites**
 
-- OCaml `5.1`
+- OCaml `5.4`
 - opam
 - make
 
diff --git a/docs/INSTALLATION.md b/docs/INSTALLATION.md
index 93c8df4ad..bf06430d9 100644
--- a/docs/INSTALLATION.md
+++ b/docs/INSTALLATION.md
@@ -18,7 +18,7 @@ To work on the exercises, you will need these pieces of software:
    If you already have a switch for OCaml 5.1, either load that by running `opam switch <switch-name>`, or create a new switch by running:
 
    ```bash
-   opam switch create exercism 5.1.1
+   opam switch create exercism 5.4.0
    ```
 
    The name `exercism` here is optional, but naming your switches is a good practice.