diff --git a/pkgs/development/python-modules/ecdsa/default.nix b/pkgs/development/python-modules/ecdsa/default.nix
new file mode 100644
index 00000000000..e9fdc71cd64
--- /dev/null
+++ b/pkgs/development/python-modules/ecdsa/default.nix
@@ -0,0 +1,26 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, pkgs
+}:
+
+buildPythonPackage rec {
+  pname = "ecdsa";
+  version = "0.13";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1yj31j0asmrx4an9xvsaj2icdmzy6pw0glfpqrrkrphwdpi1xkv4";
+  };
+
+  # Only needed for tests
+  buildInputs = [ pkgs.openssl ];
+
+  meta = with stdenv.lib; {
+    description = "ECDSA cryptographic signature library";
+    homepage = "https://github.com/warner/python-ecdsa";
+    license = licenses.mit;
+    maintainers = with maintainers; [ aszlig ];
+  };
+
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index b60c24cc5f9..eb282b8e874 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2340,25 +2340,7 @@ in {
 
   dtopt = callPackage ../development/python-modules/dtopt { };
 
-  ecdsa = buildPythonPackage rec {
-    name = "ecdsa-${version}";
-    version = "0.13";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/e/ecdsa/${name}.tar.gz";
-      sha256 = "1yj31j0asmrx4an9xvsaj2icdmzy6pw0glfpqrrkrphwdpi1xkv4";
-    };
-
-    # Only needed for tests
-    buildInputs = with self; [ pkgs.openssl ];
-
-    meta = {
-      description = "ECDSA cryptographic signature library";
-      homepage = "https://github.com/warner/python-ecdsa";
-      license = licenses.mit;
-      maintainers = with maintainers; [ aszlig ];
-    };
-  };
+  ecdsa = callPackage ../development/python-modules/ecdsa { };
 
   effect = callPackage ../development/python-modules/effect {};