diff --git a/pkgs/by-name/mk/mkjson/generated.nix b/pkgs/by-name/mk/mkjson/generated.nix
new file mode 100644
index 000000000000..a89306f5b427
--- /dev/null
+++ b/pkgs/by-name/mk/mkjson/generated.nix
@@ -0,0 +1,46 @@
+{ mkDerivation, lib, fetchFromGitHub
+, aeson, base, bytestring, containers, criterion
+, doctest, Glob, mersenne-random-pure64, mtl
+, optparse-applicative, parsec, random, regex-tdfa, scientific
+, text, time, unordered-containers, uuid, vector
+}:
+
+mkDerivation rec {
+  pname = "mkjson";
+  version = "0.4.0";
+  src = fetchFromGitHub {
+    owner = "mfussenegger";
+    repo = "mkjson";
+    rev = "${version}";
+    hash = "sha256-+NDLFtsWWxHv/6XC9hJOAHPU6YED5oHqS/j5BPwNsqA=";
+  };
+
+  isLibrary = false;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    aeson base bytestring containers mersenne-random-pure64 mtl
+    optparse-applicative parsec random regex-tdfa scientific text time
+    unordered-containers uuid vector
+  ];
+  executableHaskellDepends = [
+    aeson base bytestring containers mersenne-random-pure64 mtl
+    optparse-applicative parsec random regex-tdfa scientific text time
+    unordered-containers uuid vector
+  ];
+  testHaskellDepends = [
+    aeson base bytestring containers doctest Glob
+    mersenne-random-pure64 mtl optparse-applicative parsec random
+    regex-tdfa scientific text time unordered-containers uuid vector
+  ];
+  benchmarkHaskellDepends = [
+    aeson base bytestring containers criterion mersenne-random-pure64
+    mtl optparse-applicative parsec random regex-tdfa scientific text
+    time unordered-containers uuid vector
+  ];
+
+  description = "A commandline tool to generate static or random JSON records";
+  homepage = "https://github.com/mfussenegger/mkjson";
+  license = lib.licenses.mit;
+  maintainers = with lib.maintainers; [ athas ];
+  mainProgram = "mkjson";
+}
diff --git a/pkgs/by-name/mk/mkjson/package.nix b/pkgs/by-name/mk/mkjson/package.nix
new file mode 100644
index 000000000000..dfa170a5303d
--- /dev/null
+++ b/pkgs/by-name/mk/mkjson/package.nix
@@ -0,0 +1 @@
+{ haskell, haskellPackages }: haskell.lib.justStaticExecutables (haskellPackages.callPackage ./generated.nix { })
diff --git a/pkgs/top-level/release-haskell.nix b/pkgs/top-level/release-haskell.nix
index ed1d3240d1cf..1c06b9e49596 100644
--- a/pkgs/top-level/release-haskell.nix
+++ b/pkgs/top-level/release-haskell.nix
@@ -319,6 +319,7 @@ let
         madlang
         mailctl
         matterhorn
+        mkjson
         mueval
         naproche
         niv