diff --git a/docs/changelog.rst b/docs/changelog.rst
index 1e21987..781fb6a 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -6,6 +6,16 @@ Release History
 
 .. towncrier release notes start
 
+Nasdaq_100_Ticker_History 2022.1.0 (2021-12-22)
+============================================
+
+Features
+--------
+
+- Provide support for the usual end-of-year Nasdaq 100 updates
+    - Using as source data the wikipedia page: `Changes in 2021 <https://en.wikipedia.org/wiki/Nasdaq-100#Changes_in_2021>`
+- Change the versioning scheme: the major version is the calendar year
+
 Nasdaq_100_Ticker_History 0.5.0 (2021-10-02)
 ============================================
 
@@ -21,7 +31,7 @@ Nasdaq_100_Ticker_History 0.4.1 (2021-08-31)
 Features
 --------
 
-- On August 26, Crowdstrike replaced Maxim Integrated Products, who is being acquired by Analog Devices.  `Reference <https://en.wikipedia.org/wiki/Nasdaq-100#cite_ref-62>`_
+- On August 26 2021, Crowdstrike replaced Maxim Integrated Products, who is being acquired by Analog Devices.  `Reference <https://en.wikipedia.org/wiki/Nasdaq-100#cite_ref-62>`_
 
 
 Nasdaq_100_Ticker_History 0.4.0 (2021-07-31)
diff --git a/nasdaq_100_ticker_history/n100-ticker-changes-2021.yml b/nasdaq_100_ticker_history/n100-ticker-changes-2021.yml
index b5fea56..177f72c 100644
--- a/nasdaq_100_ticker_history/n100-ticker-changes-2021.yml
+++ b/nasdaq_100_ticker_history/n100-ticker-changes-2021.yml
@@ -118,4 +118,11 @@ changes: {
       !!set {CRWD},
     ],
   },
+  '2021-12-20': {
+    python_set_operators: [ '-', '|' ],
+    rhs_operands: [
+      !!set {CDW, CERN, CHKP, FOX, FOXA, INCY, TCOM},
+      !!set {ABNB, DDOG, FTNT, LCID, PANW, ZS},
+    ],
+  },
 }
diff --git a/nasdaq_100_ticker_history/n100-ticker-changes-2022.yml b/nasdaq_100_ticker_history/n100-ticker-changes-2022.yml
new file mode 100644
index 0000000..b5fea56
--- /dev/null
+++ b/nasdaq_100_ticker_history/n100-ticker-changes-2022.yml
@@ -0,0 +1,121 @@
+---
+year: 2021
+tickers_on_Jan_1: !!set
+  ? AAPL
+  ? ADBE
+  ? ADI
+  ? ADP
+  ? ADSK
+  ? AEP
+  ? ALGN
+  ? ALXN
+  ? AMAT
+  ? AMD
+  ? AMGN
+  ? AMZN
+  ? ANSS
+  ? ASML
+  ? ATVI
+  ? AVGO
+  ? BIDU
+  ? BIIB
+  ? BKNG
+  ? CDNS
+  ? CDW
+  ? CERN
+  ? CHKP
+  ? CHTR
+  ? CMCSA
+  ? COST
+  ? CPRT
+  ? CSCO
+  ? CSX
+  ? CTAS
+  ? CTSH
+  ? DLTR
+  ? DOCU
+  ? DXCM
+  ? EA
+  ? EBAY
+  ? EXC
+  ? FAST
+  ? FB
+  ? FISV
+  ? FOX
+  ? FOXA
+  ? GILD
+  ? GOOG
+  ? GOOGL
+  ? IDXX
+  ? ILMN
+  ? INCY
+  ? INTC
+  ? INTU
+  ? ISRG
+  ? JD
+  ? KDP
+  ? KHC
+  ? KLAC
+  ? LRCX
+  ? LULU
+  ? MAR
+  ? MCHP
+  ? MDLZ
+  ? MELI
+  ? MNST
+  ? MRNA
+  ? MRVL
+  ? MSFT
+  ? MTCH
+  ? MU
+  ? MXIM
+  ? NFLX
+  ? NTES
+  ? NVDA
+  ? NXPI
+  ? OKTA
+  ? ORLY
+  ? PAYX
+  ? PCAR
+  ? PDD
+  ? PEP
+  ? PTON
+  ? PYPL
+  ? QCOM
+  ? REGN
+  ? ROST
+  ? SBUX
+  ? SGEN
+  ? SIRI
+  ? SNPS
+  ? SPLK
+  ? SWKS
+  ? TCOM
+  ? TEAM
+  ? TMUS
+  ? TSLA
+  ? TXN
+  ? VRSK
+  ? VRSN
+  ? VRTX
+  ? WBA
+  ? WDAY
+  ? XEL
+  ? XLNX
+  ? ZM
+changes: {
+  '2021-07-21': {
+    python_set_operators: [ '-', '|' ],
+    rhs_operands: [
+      !!set {ALXN},
+      !!set {HON},
+    ],
+  },
+  '2021-08-26': {
+    python_set_operators: [ '-', '|' ],
+    rhs_operands: [
+      !!set {MXIM},
+      !!set {CRWD},
+    ],
+  },
+}
diff --git a/pyproject.toml b/pyproject.toml
index 883118c..faa54de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "nasdaq-100-ticker-history"
-version = "0.5.0"
+version = "2022.0.0-alpha.0"
 description = "Return NASDAQ 100 ticker symbols by date."
 authors = ["Jeff McCarrell <jeff@mccarrell.org>"]
 license = "MIT"
diff --git a/tests/test_n100_tickers.py b/tests/test_n100_tickers.py
index 67fc068..e785426 100644
--- a/tests/test_n100_tickers.py
+++ b/tests/test_n100_tickers.py
@@ -44,6 +44,22 @@ def _test_at_year_boundary(year: int, expected_number_of_tickers: int) -> None:
     assert previous_tickers == current_tickers
 
 
+# def test_year_boundary_2021_2022() -> None:
+#     _test_at_year_boundary(2022, 102)
+
+
+# def test_2021_annual_changes() -> None:
+#     num_tickers_2021_end_of_year = 102
+#     # Annual 2021 changes
+#     # https://www.nasdaq.com/press-release/annual-changes-to-the-nasdaq-100-indexr-2021-12-10-0
+#     #
+#     # On December 10, 2021 Nasdaq announced that six new companies would join the index prior to the market open on December 20, 2021.
+#     # They are Airbnb (ABNB), Datadog (DDOG), Fortinet (FTNT), Lucid Group (LCID), Palo Alto Networks (PANW), and Zscaler (ZS).
+#     # They will replace CDW (CDW), Cerner (CERN), Check Point (CHKP), Fox Corporation (FOXA/FOX), Incyte (INCY), and Trip.com (TCOM).
+#     # https://greenstocknews.com/news/nasdaq/lcid/annual-changes-to-the-nasdaq-100-index
+#     assert len(tickers_as_of(2021, 12, 17)) == num_tickers_2021_end_of_year
+
+
 def test_tickers_2021() -> None:
     num_tickers_2021 = 102