diff --git a/pkgs/development/tools/ocaml/ocp-index/default.nix b/pkgs/development/tools/ocaml/ocp-index/default.nix
index 98e8b06e795b..1c8897cb3dbc 100644
--- a/pkgs/development/tools/ocaml/ocp-index/default.nix
+++ b/pkgs/development/tools/ocaml/ocp-index/default.nix
@@ -2,7 +2,7 @@
 
 buildDunePackage rec {
   pname = "ocp-index";
-  version = "1.3.5";
+  version = "1.3.6";
 
   minimalOCamlVersion = "4.08";
 
@@ -10,7 +10,7 @@ buildDunePackage rec {
     owner = "OCamlPro";
     repo = "ocp-index";
     rev = version;
-    hash = "sha256-Zn3BPaMB68V363OljFFdmLyYf+S0wFJK44L8t1TSG1Q=";
+    hash = "sha256-EgRpC58NBVFO1w0xx11CnonatU2H7bECsEk6Y4c/odY=";
   };
 
   nativeBuildInputs = [ cppo ];