diff --git a/pkgs/development/python-modules/sqlalchemy/default.nix b/pkgs/development/python-modules/sqlalchemy/default.nix
index 83fd3e7b10b..7d35bb8487c 100644
--- a/pkgs/development/python-modules/sqlalchemy/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchPypi, buildPythonPackage, isPy3k, isPy35
+{ stdenv, lib, fetchPypi, buildPythonPackage, isPy3k, isPy35, fetchpatch
 , mock
 , pysqlite
 , pytestCheckHook
@@ -13,6 +13,14 @@ buildPythonPackage rec {
     sha256 = "d2f25c7f410338d31666d7ddedfa67570900e248b940d186b48461bd4e5569a1";
   };
 
+  patches = [
+    # fix test_pyodbc_extra_connect_azure test failure
+    (fetchpatch {
+      url = "https://github.com/sqlalchemy/sqlalchemy/commit/7293b3dc0e9eb3dae84ffd831494b85355df8e73.patch";
+      sha256 = "1z61lzxamz74771ddlqmbxba1dcr77f016vqfcmb44dxb228w2db";
+    })
+  ];
+
   checkInputs = [
     pytestCheckHook
     mock