diff --git a/pkgs/development/python-modules/sqlalchemy/default.nix b/pkgs/development/python-modules/sqlalchemy/default.nix
index c7ff2e56f02b..480ee6a67a0f 100644
--- a/pkgs/development/python-modules/sqlalchemy/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy/default.nix
@@ -1,43 +1,25 @@
-{ lib
-, fetchPypi
-, fetchpatch
-, buildPythonPackage
-, pytest
+{ lib, fetchPypi, buildPythonPackage, isPy3k
 , mock
-, isPy3k
 , pysqlite
+, pytest
+, pytest_xdist
 }:
 
 buildPythonPackage rec {
   pname = "SQLAlchemy";
-  version = "1.2.14";
+  version = "1.3.6";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "9de7c7dabcf06319becdb7e15099c44e5e34ba7062f9ba10bc00e562f5db3d04";
+    sha256 = "1zxhabcgzspwrh9l7b68p57kqx4h664a1dp9xr8mi84r472pyzi1";
   };
 
-  patches = [
-    # fix for failing doc tests
-    # https://bitbucket.org/zzzeek/sqlalchemy/issues/4370/sqlite-325x-docs-tutorialrst-doctests-fail
-    (fetchpatch {
-      name = "doc-test-fixes.patch";
-      url = https://bitbucket.org/zzzeek/sqlalchemy/commits/63279a69e2b9277df5e97ace161fa3a1bb4f29cd/raw;
-      sha256 = "1x25aj5hqmgjdak4hllya0rf0srr937k1hwaxb24i9ban607hjri";
-    })
-  ];
-
   checkInputs = [
     pytest
     mock
-#     Disable pytest_xdist tests for now, because our version seems to be too new.
-#     pytest_xdist
+    pytest_xdist
   ] ++ lib.optional (!isPy3k) pysqlite;
 
-  checkPhase = ''
-    py.test -k "not test_round_trip_direct_type_affinity"
-  '';
-
   meta = with lib; {
     homepage = http://www.sqlalchemy.org/;
     description = "A Python SQL toolkit and Object Relational Mapper";