diff --git a/pkgs/development/ocaml-modules/vlq/default.nix b/pkgs/development/ocaml-modules/vlq/default.nix
new file mode 100644
index 00000000000..41991cbf748
--- /dev/null
+++ b/pkgs/development/ocaml-modules/vlq/default.nix
@@ -0,0 +1,25 @@
+{ lib, buildDunePackage, fetchurl
+, dune-configurator
+}:
+
+buildDunePackage rec {
+  pname = "vlq";
+  version = "0.2.1";
+
+  src = fetchurl {
+    url = "https://github.com/flowtype/ocaml-vlq/releases/download/v${version}/vlq-v${version}.tbz";
+    sha256 = "02wr9ph4q0nxmqgbc67ydf165hmrdv9b655krm2glc3ahb6larxi";
+  };
+
+  useDune2 = true;
+
+  buildInputs = [ dune-configurator ];
+
+  meta = {
+    description = "encoding variable-length quantities, in particular base64";
+    license = lib.licenses.mit;
+    homepage = "https://github.com/flowtype/ocaml-vlq";
+    maintainers = [ lib.maintainers.nomeata ];
+  };
+
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 160c810840e..364aed68e22 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1304,6 +1304,8 @@ let
 
     vg = callPackage ../development/ocaml-modules/vg { };
 
+    vlq = callPackage ../development/ocaml-modules/vlq { };
+
     visitors = callPackage ../development/ocaml-modules/visitors { };
 
     wasm = callPackage ../development/ocaml-modules/wasm { };