diff --git a/bash/__init__.py b/bash/__init__.py
index d8da050..f51f0be 100644
--- a/bash/__init__.py
+++ b/bash/__init__.py
@@ -18,9 +18,9 @@ def __init__(self, *args, **kwargs):
         self.stdout = None
         self.bash(*args, **kwargs)
 
-    def bash(self, cmd, env=None, stdout=PIPE, stderr=PIPE, timeout=None, sync=True):
+    def bash(self, cmd, env=None, stdout=PIPE, stderr=PIPE, timeout=None, sync=True, cwd=None):
         self.p = Popen(
-            cmd, shell=True, stdout=stdout, stdin=PIPE, stderr=stderr, env=env
+            cmd, shell=True, stdout=stdout, stdin=PIPE, stderr=stderr, env=env, cwd=cwd
         )
         if sync:
             self.sync(timeout)
diff --git a/tests.py b/tests.py
index 41263b4..208b366 100644
--- a/tests.py
+++ b/tests.py
@@ -66,3 +66,9 @@ def test_sync_false_does_not_wait(self):
         self.assertTrue((t2-t1).total_seconds() < 0.5)
         b.sync()
         self.assertEqual(b.stdout, b'1\n')
+
+    def test_cwd_works(self):
+        without_cwd = bash('echo $PWD')
+        with_cwd = bash('echo $PWD', cwd='/tmp')
+        self.assertNotEqual(without_cwd, with_cwd)
+        self.assertEqual(str(with_cwd), '/tmp')