diff --git a/src/pricehist/sources/alphavantage.py b/src/pricehist/sources/alphavantage.py
index 707ba50..4824282 100644
--- a/src/pricehist/sources/alphavantage.py
+++ b/src/pricehist/sources/alphavantage.py
@@ -51,8 +51,7 @@ class AlphaVantage(BaseSource):
             "will list all digital and physical currency symbols.\n"
             "The PAIR for stocks is the stock symbol only. The quote currency "
             f"will be determined automatically. {self._stock_symbols_message()}\n"
-            "The price type 'adjclose' is only available for stocks, and "
-            "requires an access key for which premium endpoints are unlocked.\n"
+            "The price type 'adjclose' is only available for stocks.\n"
             "Beware that digital currencies quoted in non-USD currencies may "
             "be converted from USD data at one recent exchange rate rather "
             "than using historical rates.\n"
@@ -187,10 +186,9 @@ class AlphaVantage(BaseSource):
     def _stock_data(self, series):
         output_quote = self._stock_currency(series.base) or "UNKNOWN"
 
-        if series.type == "adjclose":
-            function = "TIME_SERIES_DAILY_ADJUSTED"
-        else:
-            function = "TIME_SERIES_DAILY"
+        # As of 2022-11-24 TIME_SERIES_DAILY_ADJUSTED is no longer premium, but
+        # now TIME_SERIES_DAILY is. So, always use TIME_SERIES_DAILY_ADJUSTED.
+        function = "TIME_SERIES_DAILY_ADJUSTED"
 
         params = {
             "function": function,
@@ -341,7 +339,7 @@ class AlphaVantage(BaseSource):
                 raise exceptions.RateLimit(data["Note"])
             if (
                 "Information" in data
-                and "ways to unlock premium" in data["Information"]
+                and "unlock all premium endpoints" in data["Information"]
             ):
                 msg = "You were denied access to a premium endpoint."
                 raise exceptions.CredentialsError([self.API_KEY_NAME], self, msg)
diff --git a/tests/live.sh b/tests/live.sh
index 6b391e7..c9454d4 100755
--- a/tests/live.sh
+++ b/tests/live.sh
@@ -47,11 +47,11 @@ name="Alpha Vantage stocks"
 cmd="pricehist fetch alphavantage TSLA -s 2021-01-04 -e 2021-01-08"
 read -r -d '' expected <<END
 date,base,quote,amount,source,type
-2021-01-04,TSLA,USD,729.7700,alphavantage,close
-2021-01-05,TSLA,USD,735.1100,alphavantage,close
-2021-01-06,TSLA,USD,755.9800,alphavantage,close
-2021-01-07,TSLA,USD,816.0400,alphavantage,close
-2021-01-08,TSLA,USD,880.0200,alphavantage,close
+2021-01-04,TSLA,USD,729.77,alphavantage,close
+2021-01-05,TSLA,USD,735.11,alphavantage,close
+2021-01-06,TSLA,USD,755.98,alphavantage,close
+2021-01-07,TSLA,USD,816.04,alphavantage,close
+2021-01-08,TSLA,USD,880.02,alphavantage,close
 END
 run_test "$name" "$cmd" "$expected"
 
diff --git a/tests/pricehist/sources/test_alphavantage.py b/tests/pricehist/sources/test_alphavantage.py
index 8ff70cc..5a0cca9 100644
--- a/tests/pricehist/sources/test_alphavantage.py
+++ b/tests/pricehist/sources/test_alphavantage.py
@@ -48,9 +48,6 @@ search_url = re.compile(
     r"https://www\.alphavantage\.co/query\?function=SYMBOL_SEARCH.*"
 )
 stock_url = re.compile(
-    r"https://www\.alphavantage\.co/query\?function=TIME_SERIES_DAILY&.*"
-)
-adj_stock_url = re.compile(
     r"https://www\.alphavantage\.co/query\?function=TIME_SERIES_DAILY_ADJUSTED.*"
 )
 physical_url = re.compile(r"https://www\.alphavantage\.co/query\?function=FX_DAILY.*")
@@ -69,12 +66,7 @@ rate_limit_json = (
 
 premium_json = (
     '{ "Information": "Thank you for using Alpha Vantage! This is a premium '
-    "endpoint and there are multiple ways to unlock premium endpoints: (1) "
-    "become a holder of Alpha Vantage Coin (AVC), an Ethereum-based "
-    "cryptocurrency that provides various utility & governance functions "
-    "within the Alpha Vantage ecosystem (AVC mining guide: "
-    "https://www.alphatournament.com/avc_mining_guide/) to unlock all "
-    "premium endpoints, (2) subscribe to any of the premium plans at "
+    "endpoint. You may subscribe to any of the premium plans at "
     "https://www.alphavantage.co/premium/ to instantly unlock all premium "
     'endpoints" }'
 )
@@ -117,7 +109,7 @@ def ibm_ok(requests_mock):
 @pytest.fixture
 def ibm_adj_ok(requests_mock):
     json = (Path(os.path.splitext(__file__)[0]) / "ibm-partial-adj.json").read_text()
-    requests_mock.add(responses.GET, adj_stock_url, body=json, status=200)
+    requests_mock.add(responses.GET, stock_url, body=json, status=200)
     yield requests_mock
 
 
@@ -304,7 +296,7 @@ def test_fetch_stock_known(src, type, search_ok, ibm_ok):
     stock_req = ibm_ok.calls[1].request
     assert search_req.params["function"] == "SYMBOL_SEARCH"
     assert search_req.params["keywords"] == "IBM"
-    assert stock_req.params["function"] == "TIME_SERIES_DAILY"
+    assert stock_req.params["function"] == "TIME_SERIES_DAILY_ADJUSTED"
     assert stock_req.params["symbol"] == "IBM"
     assert stock_req.params["outputsize"] == "full"
     assert (series.base, series.quote) == ("IBM", "USD")
@@ -427,7 +419,7 @@ def test_fetch_stock_rate_limit(src, type, search_ok, requests_mock):
 
 
 def test_fetch_stock_premium(src, search_ok, requests_mock):
-    requests_mock.add(responses.GET, adj_stock_url, body=premium_json)
+    requests_mock.add(responses.GET, stock_url, body=premium_json)
     with pytest.raises(exceptions.CredentialsError) as e:
         src.fetch(Series("IBM", "", "adjclose", "2021-01-04", "2021-01-08"))
     assert "denied access to a premium endpoint" in str(e.value)