diff --git a/modules/lang/ocaml/config.el b/modules/lang/ocaml/config.el
index e25a7ff13..243ec5858 100644
--- a/modules/lang/ocaml/config.el
+++ b/modules/lang/ocaml/config.el
@@ -53,6 +53,10 @@
     (add-hook 'merlin-mode-hook #'+ocaml|init-flycheck))
 
 
+  (def-package! merlin-eldoc
+    :hook (merlin-mode . merlin-eldoc-setup))
+
+
   (def-package! utop
     :when (featurep! :feature eval)
     :defer t  ; loaded by hook below
diff --git a/modules/lang/ocaml/packages.el b/modules/lang/ocaml/packages.el
index 27af6197d..71128923f 100644
--- a/modules/lang/ocaml/packages.el
+++ b/modules/lang/ocaml/packages.el
@@ -3,6 +3,7 @@
 
 (package! tuareg)
 (package! merlin)
+(package! merlin-eldoc)
 (package! ocp-indent)
 
 (when (featurep! :feature syntax-checker)