diff --git a/SPECS/tzdata/tzdata.signatures.json b/SPECS/tzdata/tzdata.signatures.json
index 7fb67dc595..0ddf33f6a1 100644
--- a/SPECS/tzdata/tzdata.signatures.json
+++ b/SPECS/tzdata/tzdata.signatures.json
@@ -1,5 +1,5 @@
 {
  "Signatures": {
-  "tzdata2019c.tar.gz": "79c7806dab09072308da0e3d22c37d3b245015a591891ea147d3b133b60ffc7c"
+  "tzdata2020b.tar.gz": "9b053f951d245ce89d850b96ee4711d82d833559b1fc96ba19f90bc4d745e809"
  }
 }
\ No newline at end of file
diff --git a/SPECS/tzdata/tzdata.spec b/SPECS/tzdata/tzdata.spec
index 2f6974ca65..2118e2a2a6 100644
--- a/SPECS/tzdata/tzdata.spec
+++ b/SPECS/tzdata/tzdata.spec
@@ -1,18 +1,18 @@
 Summary:        Time zone data
 Name:           tzdata
-Version:        2019c
-Release:        3%{?dist}
-URL:            https://www.iana.org/time-zones
+Version:        2020b
+Release:        1%{?dist}
 License:        Public Domain
-Group:          Applications/System
 Vendor:         Microsoft Corporation
 Distribution:   Mariner
+Group:          Applications/System
+URL:            https://www.iana.org/time-zones
 Source0:        https://data.iana.org/time-zones/releases/%{name}%{version}.tar.gz
-
 BuildArch:      noarch
 
 %description
 Sources for time zone and daylight saving time data
+
 %define blddir      %{name}-%{version}
 
 %prep
@@ -20,16 +20,18 @@ rm -rf %{blddir}
 install -vdm 755 %{blddir}
 cd %{blddir}
 tar xf %{SOURCE0} --no-same-owner
+
 %build
+
 %install
 cd %{blddir}
 ZONEINFO=%{buildroot}%{_datarootdir}/zoneinfo
 install -vdm 755 $ZONEINFO/{posix,right}
 for tz in etcetera southamerica northamerica europe africa antarctica  \
-    asia australasia backward pacificnew systemv; do
-    zic -L /dev/null    -d $ZONEINFO        -y "sh yearistype.sh" ${tz}
-    zic -L /dev/null    -d $ZONEINFO/posix  -y "sh yearistype.sh" ${tz}
-    zic -L leapseconds  -d $ZONEINFO/right  -y "sh yearistype.sh" ${tz}
+    asia australasia backward; do
+    zic -L /dev/null    -d $ZONEINFO        ${tz}
+    zic -L /dev/null    -d $ZONEINFO/posix  ${tz}
+    zic -L leapseconds  -d $ZONEINFO/right  ${tz}
 done
 cp -v zone.tab iso3166.tab zone1970.tab $ZONEINFO
 zic -d $ZONEINFO -p America/New_York
@@ -43,30 +45,45 @@ ln -svf %{_datarootdir}/zoneinfo/UTC %{buildroot}%{_sysconfdir}/localtime
 %{_datadir}/*
 
 %changelog
-* Sat May 09 00:21:12 PST 2020 Nick Samson <nisamson@microsoft.com> - 2019c-3
+* Fri Oct 09 2020 Thomas Crain <thcrain@microsoft.com> - 2020b-1
+- Update to 2020b
+- Update %%install section to reflect removal of deprecated files
+
+* Sat May 09 2020 Nick Samson <nisamson@microsoft.com> - 2019c-3
 - Added %%license line automatically
 
-*   Tue Apr 07 2020 Paul Monson <paulmon@microsoft.com> 2019c-2
--   Fix Source0.
-*   Wed Mar 18 2020 Henry Beberman <henry.beberman@microsoft.com> 2019c-1
--   Update to 2019c. License verified.
-*   Tue Sep 03 2019 Mateusz Malisz <mamalisz@microsoft.com> 2019a-2
--   Initial CBL-Mariner import from Photon (license: Apache2).
-*   Wed May 22 2019 Gerrit Photon <photon-checkins@vmware.com> 2019a-1
--   Automatic Version Bump
-*   Thu Sep 06 2018 Anish Swaminathan <anishs@vmware.com> 2017b-3
--   Add zone1970.tab to zoneinfo
-*   Mon May 01 2017 Bo Gan <ganb@vmware.com> 2017b-2
--   Remove (pre/post)trans, config file as noreplace.
-*   Wed Apr 05 2017 Xiaolin Li <xiaolinl@vmware.com> 2017b-1
--   Updated to version 2017b.
-*   Wed Dec 14 2016 Anish Swaminathan <anishs@vmware.com> 2016h-2
--   Preserve /etc/localtime symlink over upgrade
-*   Thu Oct 27 2016 Anish Swaminathan <anishs@vmware.com> 2016h-1
--   Upgrade to 2016h
-*   Tue May 24 2016 Priyesh Padmavilasom <ppadmavilasom@vmware.com> 2016a-2
--   GA - Bump release of all rpms
-*   Tue Feb 23 2016 Harish Udaiya Kumar <hudaiyakumar@vmware.com> 2016a-1
--   Upgraded to version 2016a
-*   Wed Nov 5 2014 Divya Thaluru <dthaluru@vmware.com> 2013i-1
--   Initial build. First version
+* Tue Apr 07 2020 Paul Monson <paulmon@microsoft.com> - 2019c-2
+- Fix Source0.
+
+* Wed Mar 18 2020 Henry Beberman <henry.beberman@microsoft.com> - 2019c-1
+- Update to 2019c. License verified.
+
+* Tue Sep 03 2019 Mateusz Malisz <mamalisz@microsoft.com> - 2019a-2
+- Initial CBL-Mariner import from Photon (license: Apache2).
+
+* Wed May 22 2019 Gerrit Photon <photon-checkins@vmware.com> - 2019a-1
+- Automatic Version Bump
+
+* Thu Sep 06 2018 Anish Swaminathan <anishs@vmware.com> - 2017b-3
+- Add zone1970.tab to zoneinfo
+
+* Mon May 01 2017 Bo Gan <ganb@vmware.com> - 2017b-2
+- Remove (pre/post)trans, config file as noreplace.
+
+* Wed Apr 05 2017 Xiaolin Li <xiaolinl@vmware.com> - 2017b-1
+- Updated to version 2017b.
+
+* Wed Dec 14 2016 Anish Swaminathan <anishs@vmware.com> - 2016h-2
+- Preserve /etc/localtime symlink over upgrade
+
+* Thu Oct 27 2016 Anish Swaminathan <anishs@vmware.com> - 2016h-1
+- Upgrade to 2016h
+
+* Tue May 24 2016 Priyesh Padmavilasom <ppadmavilasom@vmware.com> - 2016a-2
+- GA - Bump release of all rpms
+
+* Tue Feb 23 2016 Harish Udaiya Kumar <hudaiyakumar@vmware.com> - 2016a-1
+- Upgraded to version 2016a
+
+* Wed Nov 5 2014 Divya Thaluru <dthaluru@vmware.com> - 2013i-1
+- Initial build. First version
diff --git a/cgmanifest.json b/cgmanifest.json
index bc8ad31f8a..3637e463f6 100644
--- a/cgmanifest.json
+++ b/cgmanifest.json
@@ -5725,8 +5725,8 @@
         "type": "other",
         "other": {
           "name": "tzdata",
-          "version": "2019c",
-          "downloadUrl": "https://data.iana.org/time-zones/releases/tzdata2019c.tar.gz"
+          "version": "2020b",
+          "downloadUrl": "https://data.iana.org/time-zones/releases/tzdata2020b.tar.gz"
         }
       }
     },