diff --git a/pkgs/development/python-modules/marshmallow/default.nix b/pkgs/development/python-modules/marshmallow/default.nix
new file mode 100644
index 000000000000..17325d3204d0
--- /dev/null
+++ b/pkgs/development/python-modules/marshmallow/default.nix
@@ -0,0 +1,27 @@
+{ lib, buildPythonPackage, fetchPypi,
+  dateutil, simplejson
+}:
+
+buildPythonPackage rec {
+  pname = "marshmallow";
+  name = "${pname}-${version}";
+  version = "2.13.5";
+
+  meta = {
+    homepage = "https://github.com/marshmallow-code/marshmallow";
+    description = ''
+      A lightweight library for converting complex objects to and from
+      simple Python datatypes.
+    '';
+    license = lib.licenses.mit;
+  };
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "048rzdkvnais51xdiy27nail5vxjb4ggw3vd60prn1q11lf16wig";
+  };
+
+  propagatedBuildInputs = [ dateutil simplejson ];
+
+  doCheck = false;
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 87a530973f0e..7f5e5af363a9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -11907,6 +11907,8 @@ in {
     };
   };
 
+  marshmallow = callPackage ../development/python-modules/marshmallow { };
+
   manuel = buildPythonPackage rec {
     name = "manuel-${version}";
     version = "1.8.0";