diff --git a/pkgs/development/ocaml-modules/linksem/default.nix b/pkgs/development/ocaml-modules/linksem/default.nix
new file mode 100644
index 00000000000..751f4e14a2d
--- /dev/null
+++ b/pkgs/development/ocaml-modules/linksem/default.nix
@@ -0,0 +1,36 @@
+{ lib
+, fetchFromGitHub
+, stdenv
+, findlib
+, ocaml
+, lem
+}:
+
+lib.throwIfNot (lib.versionAtLeast ocaml.version "4.07")
+  "linksem is not available for OCaml ${ocaml.version}"
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-linksem";
+  version = "0.8";
+
+  src = fetchFromGitHub {
+    owner = "rems-project";
+    repo = "linksem";
+    rev = version;
+    hash = "sha256-7/YfDK3TruKCckMzAPLRrwBkHRJcX1S+AzXHWRxkZPA=";
+  };
+
+  nativeBuildInputs = [ findlib ocaml ];
+
+  propagatedBuildInputs = [ lem ];
+
+  createFindlibDestdir = true;
+
+  meta = with lib; {
+    homepage = "https://github.com/rems-project/linksem";
+    description = "A formalisation of substantial parts of ELF linking and DWARF debug information";
+    maintainers = with maintainers; [ genericnerdyusername ];
+    license = licenses.bsd2;
+    platforms = ocaml.meta.platforms;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 6c70185c0cb..145203e837b 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -759,6 +759,8 @@ let
 
     linenoise = callPackage ../development/ocaml-modules/linenoise { };
 
+    linksem = callPackage ../development/ocaml-modules/linksem { };
+
     llvm = callPackage ../development/ocaml-modules/llvm {
       libllvm = pkgs.llvmPackages_10.libllvm;
     };