diff --git a/pkgs/development/coq-modules/reglang/default.nix b/pkgs/development/coq-modules/reglang/default.nix
new file mode 100644
index 00000000000..bc18108264a
--- /dev/null
+++ b/pkgs/development/coq-modules/reglang/default.nix
@@ -0,0 +1,25 @@
+{ lib, mkCoqDerivation, coq, ssreflect, version ? null }:
+with lib;
+
+mkCoqDerivation {
+  pname = "reglang";
+
+  releaseRev = v: "v${v}";
+
+  release."1.1.2".sha256 = "sha256-SEnMilLNxh6a3oiDNGLaBr8quQ/nO2T9Fwdf/1il2Yk=";
+
+  inherit version;
+  defaultVersion = with versions; switch coq.coq-version [
+    { case = range "8.10" "8.13"; out = "1.1.2"; }
+  ] null;
+
+
+  propagatedBuildInputs = [ ssreflect ];
+
+  meta = {
+    description = "Regular Language Representations in Coq";
+    maintainers = with maintainers; [ siraben ];
+    license = licenses.cecill-b;
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/top-level/coq-packages.nix b/pkgs/top-level/coq-packages.nix
index bd957bdb49d..1ac8c4c4005 100644
--- a/pkgs/top-level/coq-packages.nix
+++ b/pkgs/top-level/coq-packages.nix
@@ -69,6 +69,7 @@ let
       paramcoq = callPackage ../development/coq-modules/paramcoq {};
       pocklington = callPackage ../development/coq-modules/pocklington {};
       QuickChick = callPackage ../development/coq-modules/QuickChick {};
+      reglang = callPackage ../development/coq-modules/reglang {};
       relation-algebra = callPackage ../development/coq-modules/relation-algebra {};
       simple-io = callPackage ../development/coq-modules/simple-io { };
       stdpp = callPackage ../development/coq-modules/stdpp { };