diff --git a/beanprice/sources/BUILD b/beanprice/sources/BUILD
index 2ff08f2..9e8d704 100644
--- a/beanprice/sources/BUILD
+++ b/beanprice/sources/BUILD
@@ -1,25 +1,5 @@
 package(default_visibility = ["//visibility:public"])
 
-py_library(
-    name = "iex",
-    srcs = ["iex.py"],
-    deps = [
-        "//beancount/core:number",
-        "//beancount/prices:source",
-    ],
-)
-
-py_test(
-    name = "iex_test",
-    srcs = ["iex_test.py"],
-    deps = [
-        "//beancount/core:number",
-        "//beancount/prices:source",
-        "//beancount/prices/sources:iex",
-        "//beanprice:date_utils",
-    ],
-)
-
 py_library(
     name = "oanda",
     srcs = ["oanda.py"],
diff --git a/beanprice/sources/iex.py b/beanprice/sources/iex.py
deleted file mode 100644
index cbac92d..0000000
--- a/beanprice/sources/iex.py
+++ /dev/null
@@ -1,63 +0,0 @@
-"""Fetch prices from the IEX 1.0 public API.
-
-This is a really fantastic exchange API with a lot of relevant information.
-
-Timezone information: There is currency no support for historical prices. The
-output datetime is provided as a UNIX timestamp.
-"""
-
-__copyright__ = "Copyright (C) 2018-2020  Martin Blais"
-__license__ = "GNU GPLv2"
-
-import datetime
-from decimal import Decimal
-
-from dateutil import tz
-import requests
-
-from beanprice import source
-
-
-class IEXError(ValueError):
-    "An error from the IEX API."
-
-
-def fetch_quote(ticker):
-    """Fetch the latest price for the given ticker."""
-
-    url = "https://api.iextrading.com/1.0/tops/last?symbols={}".format(ticker.upper())
-    response = requests.get(url)
-    if response.status_code != requests.codes.ok:
-        raise IEXError(
-            "Invalid response ({}): {}".format(response.status_code, response.text)
-        )
-
-    results = response.json()
-    if len(results) != 1:
-        raise IEXError("Invalid number of responses from IEX: {}".format(response.text))
-    result = results[0]
-
-    price = Decimal(result["price"]).quantize(Decimal("0.01"))
-
-    # IEX is American markets.
-    us_timezone = tz.gettz("America/New_York")
-    time = datetime.datetime.fromtimestamp(result["time"] / 1000)
-    time = time.astimezone(us_timezone)
-
-    # As far as can tell, all the instruments on IEX are priced in USD.
-    return source.SourcePrice(price, time, "USD")
-
-
-class Source(source.Source):
-    "IEX API price extractor."
-
-    def get_latest_price(self, ticker):
-        """See contract in beanprice.source.Source."""
-        return fetch_quote(ticker)
-
-    def get_historical_price(self, ticker, time):
-        """See contract in beanprice.source.Source."""
-        raise NotImplementedError(
-            "This is now implemented at https://iextrading.com/developers/docs/#hist and "
-            "needs to be added here."
-        )
diff --git a/beanprice/sources/iex_test.py b/beanprice/sources/iex_test.py
deleted file mode 100644
index 73b5e1c..0000000
--- a/beanprice/sources/iex_test.py
+++ /dev/null
@@ -1,52 +0,0 @@
-__copyright__ = "Copyright (C) 2018-2020  Martin Blais"
-__license__ = "GNU GPLv2"
-
-import datetime
-import unittest
-from unittest import mock
-from decimal import Decimal
-
-from dateutil import tz
-import requests
-
-from beanprice import date_utils
-from beanprice import source
-from beanprice.sources import iex
-
-
-def response(contents, status_code=requests.codes.ok):
-    """Produce a context manager to patch a JSON response."""
-    response = mock.Mock()
-    response.status_code = status_code
-    response.text = ""
-    response.json.return_value = contents
-    return mock.patch("requests.get", return_value=response)
-
-
-class IEXPriceFetcher(unittest.TestCase):
-    def test_error_network(self):
-        with response(None, 404):
-            with self.assertRaises(ValueError) as exc:
-                iex.fetch_quote("AAPL")
-                self.assertRegex(exc.message, "premium")
-
-    def _test_valid_response(self):
-        contents = [{"symbol": "HOOL", "price": 183.61, "size": 100, "time": 1590177596030}]
-        with response(contents):
-            srcprice = iex.fetch_quote("HOOL")
-            self.assertIsInstance(srcprice, source.SourcePrice)
-            self.assertEqual(Decimal("183.61"), srcprice.price)
-            self.assertEqual(
-                datetime.datetime(2020, 5, 22, 19, 59, 56, 30000, tzinfo=tz.tzutc()),
-                srcprice.time.astimezone(tz.tzutc()),
-            )
-            self.assertEqual("USD", srcprice.quote_currency)
-
-    def test_valid_response(self):
-        for tzname in "America/New_York", "Europe/Berlin", "Asia/Tokyo":
-            with date_utils.intimezone(tzname):
-                self._test_valid_response()
-
-
-if __name__ == "__main__":
-    unittest.main()