diff --git a/decouple.py b/decouple.py
index 0788928..226fcc9 100644
--- a/decouple.py
+++ b/decouple.py
@@ -228,6 +228,7 @@ def __call__(self, value):
         transform = lambda s: self.cast(s.strip(self.strip))
 
         splitter = shlex(value, posix=True)
+        splitter.escape = ''  # Do not escape backslashes
         splitter.whitespace = self.delimiter
         splitter.whitespace_split = True
 
diff --git a/tests/test_helper_csv.py b/tests/test_helper_csv.py
index 8d55a66..76397ac 100644
--- a/tests/test_helper_csv.py
+++ b/tests/test_helper_csv.py
@@ -29,3 +29,12 @@ def test_csv_quoted_parse():
     assert ['foo', "'bar, baz'", "'qux"] == csv(''' foo ,"'bar, baz'", "'qux"''')
 
     assert ['foo', '"bar, baz"', '"qux'] == csv(""" foo ,'"bar, baz"', '"qux'""")
+
+
+def test_csv_backslash():
+    csv = Csv()
+
+    raw = r'first,^https://\w+\.example\.com$,third'
+
+    assert ['first', '^https://\\w+\\.example\\.com$', 'third'] == \
+        csv(raw), "Csv helper removed backslashes."