diff --git a/pkgs/development/ocaml-modules/alcobar/default.nix b/pkgs/development/ocaml-modules/alcobar/default.nix
new file mode 100644
index 000000000000..fa91d72dacd8
--- /dev/null
+++ b/pkgs/development/ocaml-modules/alcobar/default.nix
@@ -0,0 +1,49 @@
+{
+  afl-persistent,
+  alcotest,
+  buildDunePackage,
+  calendar,
+  cmdliner,
+  fetchurl,
+  fpath,
+  lib,
+  ocaml,
+  pprint,
+  uucp,
+  uunf,
+}:
+
+buildDunePackage (finalAttrs: {
+  pname = "alcobar";
+  version = "0.3.1";
+  minimalOCamlVersion = "4.10";
+  __structuredAttrs = true;
+
+  src = fetchurl {
+    url = "https://github.com/samoht/alcobar/releases/download/v${finalAttrs.version}/alcobar-${finalAttrs.version}.tbz";
+    hash = "sha256-V2UnvLrtf+XXkp7uFlrIpxg6+fZqwhCS/J7C3Nw+eVU=";
+  };
+
+  propagatedBuildInputs = [
+    afl-persistent
+    alcotest
+    cmdliner
+  ];
+
+  checkInputs = [
+    calendar
+    fpath
+    pprint
+    uucp
+    uunf
+  ];
+  doCheck = lib.versionAtLeast ocaml.version "5.0";
+
+  meta = {
+    description = "Crowbar with an Alcotest-compatible API";
+    homepage = "https://github.com/samoht/alcobar";
+    changelog = "https://github.com/samoht/alcobar/blob/v${finalAttrs.version}/CHANGES.md";
+    license = lib.licenses.isc;
+    maintainers = [ lib.maintainers.vog ];
+  };
+})
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 6858539d4229..754f86881773 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -24,6 +24,8 @@ let
 
         aeneas = callPackage ../development/ocaml-modules/aeneas { };
 
+        alcobar = callPackage ../development/ocaml-modules/alcobar { };
+
         alcotest = callPackage ../development/ocaml-modules/alcotest { };
 
         alcotest-lwt = callPackage ../development/ocaml-modules/alcotest/lwt.nix { };