diff --git a/pkgs/development/ocaml-modules/janestreet/0.15.nix b/pkgs/development/ocaml-modules/janestreet/0.15.nix
index f64e228a2b81..10675364396f 100644
--- a/pkgs/development/ocaml-modules/janestreet/0.15.nix
+++ b/pkgs/development/ocaml-modules/janestreet/0.15.nix
@@ -582,6 +582,13 @@ with self;
     propagatedBuildInputs = [ ppxlib base ];
   };
 
+  ppx_conv_func = janePackage {
+    pname = "ppx_conv_func";
+    hash = "sha256-61jX8yHZYOnMx1Jlqaq9zSOz25HLOa0Wv/iG6Hu82zI=";
+    meta.description = "Part of the Jane Street's PPX rewriters collection";
+    propagatedBuildInputs = [ ppxlib base ];
+  };
+
   ppx_custom_printf = janePackage {
     pname = "ppx_custom_printf";
     hash = "1k8nmq6kwqz2wpkm9ymq749dz1vd8lxrjc711knp1wyz5935hnsv";
@@ -597,6 +604,13 @@ with self;
     propagatedBuildInputs = [ core_kernel ppxlib js_of_ocaml js_of_ocaml-ppx sedlex ];
   };
 
+  ppx_csv_conv = janePackage {
+    pname = "ppx_csv_conv";
+    hash = "sha256-ctwgUs1buBZiNqac4760LhWd2/PMZRuxx8SE5T7yZ+g=";
+    meta.description = "Generate functions to read/write records in csv format";
+    propagatedBuildInputs = [ csvfields ppx_conv_func ];
+  };
+
   ppx_disable_unused_warnings = janePackage {
     pname = "ppx_disable_unused_warnings";
     hash = "0sb5i4v7p9df2bxk66rjs30k9fqdrwsq1jgykjv6wyrx2d9bv955";
diff --git a/pkgs/development/ocaml-modules/janestreet/0.16.nix b/pkgs/development/ocaml-modules/janestreet/0.16.nix
index 35d2895f679f..526ea44808cd 100644
--- a/pkgs/development/ocaml-modules/janestreet/0.16.nix
+++ b/pkgs/development/ocaml-modules/janestreet/0.16.nix
@@ -698,6 +698,13 @@ with self;
     propagatedBuildInputs = [ ppxlib base ];
   };
 
+  ppx_conv_func = janePackage {
+    pname = "ppx_conv_func";
+    hash = "sha256-HPHSZHdR9ll+7EbWc36shTdRPFYB0lkApidk+XL3clI=";
+    meta.description = "Part of the Jane Street's PPX rewriters collection";
+    propagatedBuildInputs = [ ppxlib base ];
+  };
+
   ppx_custom_printf = janePackage {
     pname = "ppx_custom_printf";
     hash = "sha256-V30ijRgcma/rwysPxNAFnuJIb7XFrfi7mfjJxN+rSak=";
@@ -712,6 +719,13 @@ with self;
     propagatedBuildInputs = [ async async_unix core_kernel core_unix ppxlib js_of_ocaml js_of_ocaml-ppx sedlex virtual_dom ];
   };
 
+  ppx_csv_conv = janePackage {
+    pname = "ppx_csv_conv";
+    hash = "sha256-RdPcDPLzoSf45Zeon3f4HcEvlwB6Q6sAINX3LHmjmj8=";
+    meta.description = "Generate functions to read/write records in csv format";
+    propagatedBuildInputs = [ csvfields ppx_conv_func ];
+  };
+
   ppx_demo = janePackage {
     pname = "ppx_demo";
     hash = "sha256-t/jz94YpwmorhWlcuflIZe0l85cESE62L9I7NMASVWM=";