diff --git a/pkgs/development/ocaml-modules/asn1-combinators/default.nix b/pkgs/development/ocaml-modules/asn1-combinators/default.nix
new file mode 100644
index 00000000000..bb4b5f7b312
--- /dev/null
+++ b/pkgs/development/ocaml-modules/asn1-combinators/default.nix
@@ -0,0 +1,27 @@
+{ stdenv, fetchzip, ocaml, findlib, cstruct, zarith }:
+
+assert stdenv.lib.versionAtLeast (stdenv.lib.getVersion ocaml) "4.01";
+
+let version = "0.1.1"; in
+
+stdenv.mkDerivation {
+  name = "ocaml-asn1-combinators-${version}";
+
+  src = fetchzip {
+    url = "https://github.com/mirleft/ocaml-asn1-combinators/archive/${version}.tar.gz";
+    sha256 = "1wl5g2cqd4dk33w0ski6z425cs4sgj980fw0xkwgz1w1xzywh4i2";
+  };
+
+  buildInputs = [ ocaml findlib ];
+  propagatedBuildInputs = [ cstruct zarith ];
+
+  createFindlibDestdir = true;
+
+  meta = {
+    homepage = https://github.com/mirleft/ocaml-asn1-combinators;
+    description = "Combinators for expressing ASN.1 grammars in OCaml";
+    platforms = ocaml.meta.platforms;
+    license = stdenv.lib.licenses.bsd2;
+    maintainers = with stdenv.lib.maintainers; [ vbgl ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 71d4ca4d523..6d416c19607 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3797,6 +3797,8 @@ let
 
     ansiterminal = callPackage ../development/ocaml-modules/ansiterminal { };
 
+    asn1-combinators = callPackage ../development/ocaml-modules/asn1-combinators { };
+
     bolt = callPackage ../development/ocaml-modules/bolt { };
 
     camlidl = callPackage ../development/tools/ocaml/camlidl { };