diff --git a/pkgs/development/ocaml-modules/janestreet/0.17.nix b/pkgs/development/ocaml-modules/janestreet/0.17.nix
index 1d3d058695bf..c7ec05e6b1bf 100644
--- a/pkgs/development/ocaml-modules/janestreet/0.17.nix
+++ b/pkgs/development/ocaml-modules/janestreet/0.17.nix
@@ -1438,16 +1438,28 @@ with self;
     meta.broken = lib.versionAtLeast ppxlib.version "0.36";
   };
 
-  ppx_js_style = janePackage {
-    pname = "ppx_js_style";
-    hash = "sha256-7jRzxe4bLyZ2vnHeqWiLlCUvOlNUAk0dwCfBFhrykUU=";
-    meta.description = "Code style checker for Jane Street Packages";
-    propagatedBuildInputs = [
-      octavius
-      ppxlib
-    ];
-    meta.broken = lib.versionAtLeast ppxlib.version "0.36";
-  };
+  ppx_js_style = janePackage (
+    {
+      pname = "ppx_js_style";
+      meta.description = "Code style checker for Jane Street Packages";
+      propagatedBuildInputs = [
+        octavius
+        ppxlib
+      ];
+    }
+    // (
+      if lib.versionAtLeast ppxlib.version "0.36" then
+        {
+          version = "0.17.1";
+          hash = "sha256-YGGG468WVZbT5JfCB32FfTV7kdRz14ProDQxkdZuE44=";
+        }
+      else
+        {
+          version = "0.17.0";
+          hash = "sha256-7jRzxe4bLyZ2vnHeqWiLlCUvOlNUAk0dwCfBFhrykUU=";
+        }
+    )
+  );
 
   ppx_let = janePackage (
     {
diff --git a/pkgs/development/ocaml-modules/ppx_yojson_conv/default.nix b/pkgs/development/ocaml-modules/ppx_yojson_conv/default.nix
index 11bbb63b59ca..616ecf06f5f3 100644
--- a/pkgs/development/ocaml-modules/ppx_yojson_conv/default.nix
+++ b/pkgs/development/ocaml-modules/ppx_yojson_conv/default.nix
@@ -5,18 +5,22 @@
   ppx_js_style,
   ppx_yojson_conv_lib,
   ppxlib,
+  version ? if lib.versionAtLeast ppxlib.version "0.36.0" then "0.17.1" else "0.15.1",
 }:
-buildDunePackage rec {
+buildDunePackage {
   pname = "ppx_yojson_conv";
-  version = "0.15.1";
-  duneVersion = "3";
-  minimalOCamlVersion = "4.08.0";
+  inherit version;
 
   src = fetchFromGitHub {
     owner = "janestreet";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-lSOUSMVgsRiArEhFTKpAj2yFBPbtaIc/SxdPA+24xXs=";
+    repo = "ppx_yojson_conv";
+    tag = "v${version}";
+    hash =
+      {
+        "0.15.1" = "sha256-lSOUSMVgsRiArEhFTKpAj2yFBPbtaIc/SxdPA+24xXs=";
+        "0.17.1" = "sha256-QI2uN1/KeyDxdk6oxPt48lDir55Kkgx2BX6wKCY59LI=";
+      }
+      ."${version}";
   };
 
   propagatedBuildInputs = [