diff --git a/pkgs/development/python-modules/testing-postgresql/default.nix b/pkgs/development/python-modules/testing-postgresql/default.nix
new file mode 100644
index 00000000000..7ebff6ccc36
--- /dev/null
+++ b/pkgs/development/python-modules/testing-postgresql/default.nix
@@ -0,0 +1,37 @@
+{ lib, buildPythonPackage, fetchFromGitHub, postgresql, testing-common-database
+, pg8000, pytestCheckHook, psycopg2, sqlalchemy }:
+
+buildPythonPackage rec {
+  pname = "testing.postgresql";
+  # Version 1.3.0 isn't working so let's use the latest commit from GitHub
+  version = "unstable-2017-10-31";
+
+  src = fetchFromGitHub {
+    owner = "tk0miya";
+    repo = pname;
+    rev = "c81ded434d00ec8424de0f9e1f4063c778c6aaa8";
+    sha256 = "1asqsi38di768i1sc1qm1k068dj0906ds6lnx7xcbxws0s25m2q3";
+  };
+
+  # Add PostgreSQL to search path
+  prePatch = ''
+    substituteInPlace src/testing/postgresql.py \
+      --replace "/usr/local/pgsql" "${postgresql}"
+  '';
+
+  propagatedBuildInputs = [ testing-common-database pg8000 ];
+
+  # Fix tests for Darwin build. See:
+  # https://github.com/NixOS/nixpkgs/pull/74716#issuecomment-598546916
+  __darwinAllowLocalNetworking = true;
+
+  checkInputs = [ pytestCheckHook psycopg2 sqlalchemy ];
+
+  meta = with lib; {
+    description = "Use temporary postgresql instance in testing";
+    homepage = "https://github.com/tk0miya/testing.postgresql";
+    license = licenses.asl20;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ jluttine ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2926eb9d817..cc67b532237 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7122,6 +7122,8 @@ in {
 
   testing-common-database = callPackage ../development/python-modules/testing-common-database { };
 
+  testing-postgresql = callPackage ../development/python-modules/testing-postgresql { };
+
   testpath = callPackage ../development/python-modules/testpath { };
 
   testrepository = callPackage ../development/python-modules/testrepository { };