diff --git a/pkgs/development/ocaml-modules/pa_bench/default.nix b/pkgs/development/ocaml-modules/pa_bench/default.nix
deleted file mode 100644
index 61f118ce1d0b..000000000000
--- a/pkgs/development/ocaml-modules/pa_bench/default.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-{ lib, buildOcaml, fetchFromGitHub, type_conv, pa_ounit }:
-
-buildOcaml rec {
-  pname = "pa_bench";
-  version = "113.00.00";
-
-  minimumSupportedOcamlVersion = "4.00";
-
-  src = fetchFromGitHub {
-    owner = "janestreet";
-    repo = "pa_bench";
-    rev = version;
-    sha256 = "sha256-WaXB3lgNPHy/z6D7uHxfD5W4HYuTZ+ieRbxxHlPao7c=";
-  };
-
-  buildInputs = [ pa_ounit ];
-  propagatedBuildInputs = [ type_conv ];
-
-  meta = with lib; {
-    homepage = "https://github.com/janestreet/pa_bench";
-    description = "Syntax extension for inline benchmarks";
-    license = licenses.asl20;
-    maintainers = [ maintainers.ericbmerritt ];
-  };
-}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 39fd58dcd778..9724056a10cc 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1128,8 +1128,6 @@ let
 
     pa_ounit = callPackage ../development/ocaml-modules/pa_ounit { };
 
-    pa_bench = callPackage ../development/ocaml-modules/pa_bench { };
-
     parany = callPackage ../development/ocaml-modules/parany { };
 
     pipebang = callPackage ../development/ocaml-modules/pipebang { };