diff --git a/.gitignore b/.gitignore
index 42e97c1..8f942fc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -172,3 +172,11 @@ noarch/
 /tzdata2019a.tar.gz
 /tzcode2019b.tar.gz
 /tzdata2019b.tar.gz
+/tzcode2019c.tar.gz
+/tzdata2019c.tar.gz
+/tzcode2020a.tar.gz
+/tzdata2020a.tar.gz
+/tzcode2020b.tar.gz
+/tzdata2020b.tar.gz
+/tzcode2020d.tar.gz
+/tzdata2020d.tar.gz
diff --git a/sources b/sources
index 63c6133..fa3803d 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
 SHA512 (javazic.tar.gz) = c23a4a437a87d0792f23e98025520a11273fc3d12ef5dcf64af8332ed60ba9ce77eaadfd234cee92b3ca9dc08b9e4123e804745925d68ddbd0b2e1e9039e526b
 SHA512 (javazic-1.8-37392f2f5d59.tar.xz) = 2ba718dfeed53a3bd6b44e3dfe96338a609e482e4e6d942e2a7e622fc6c52606cb323ac3a59739c463e34f70fff217c0a61f5b3d3c4958eff2801b1504ee4204
-SHA512 (tzcode2019b.tar.gz) = bcfb417fe3b7c39e702da0090291db0489744f733010ae183007fce5e441bfce885fb25ed11730cf7f363572e107d7ff0c4b38691bb99def2d8cf7017c05720f
-SHA512 (tzdata2019b.tar.gz) = c0104078d994e501d80a41bea31364b1390a75c2fbf42968a8343a090e2ac2eddbc58770ca470b192ea19dec89fcc634141a1de703ea2ffa0325176a64afe1fc
+SHA512 (tzcode2020d.tar.gz) = 315ce86574780d89482761298137b2871a21cb4391886abdc9f29c6cc09e8b8f6585f96d3f4dfef8d7b54e24720214f5c77144114ad58cc91aa5bbde350c0f9b
+SHA512 (tzdata2020d.tar.gz) = 362e4569a666b0776614be3f63f1fe3d5ae259055e7051c9875f36023db9c52b0c5a10c19067114443a4cf2bf92475f8a0aebdf79bac836d967527fcdea4e9b6
diff --git a/tzdata.spec b/tzdata.spec
index 1f4370c..3876639 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,9 +1,9 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2019b
-%define tzdata_version 2019b
-%define tzcode_version 2019b
-Release: 2%{?dist}
+Version: 2020d
+%define tzdata_version 2020d
+%define tzcode_version 2020d
+Release: 1%{?dist}
 License: Public Domain
 URL: https://www.iana.org/time-zones
 Source0: ftp://ftp.iana.org/tz/releases/tzdata%{tzdata_version}.tar.gz
@@ -78,7 +78,7 @@ echo "%{name}%{tzdata_version}" >> VERSION
 make tzdata.zi
 
 FILES="africa antarctica asia australasia europe northamerica southamerica
-       pacificnew etcetera backward"
+       etcetera backward factory"
 
 mkdir zoneinfo/{,posix,right}
 zic -y ./yearistype -d zoneinfo -L /dev/null -p America/New_York $FILES
@@ -90,7 +90,7 @@ zic -y ./yearistype -d zoneinfo/right -L leapseconds $FILES
 # tzdata-2018g introduced 25:00 which breaks java - use the rearguard files for java
 JAVA_FILES="rearguard/africa rearguard/antarctica rearguard/asia \
       rearguard/australasia rearguard/europe rearguard/northamerica \
-      rearguard/southamerica rearguard/pacificnew rearguard/etcetera \
+      rearguard/southamerica rearguard/etcetera \
       rearguard/backward"
 
 # Java 6/7 tzdata
@@ -134,6 +134,42 @@ install -p -m 644 tzdb.dat $RPM_BUILD_ROOT%{_datadir}/javazi-1.8/
 %{_datadir}/javazi-1.8
 
 %changelog
+* Wed Oct 23 2020 Patsy Griffin <patsy@redhat.com> - 2020d-1
+- Rebase to tzdata-2020d including changes from tzdata-2020c
+  - Palestine will end summer time on 2020-10-24 rather than the
+    predicted 2020-10-31.
+  - Fiji starts DST later than usual, on 2020-12-20.
+  - Rearguard now provides an empty file pacificnew to support
+    downstream software that expects it.
+
+* Wed Oct 14 2020 Patsy Griffin <patsy@redhat.com> - 2020b-1
+- Rebase to tzdata-2020b
+  - Yukon timezones represented by America/Whitehorse and
+    America/Dawson will change time zone rules from -08/-07 to
+    permanent -07 on 2020-11-01, not on 2020-03-08 as 2020a had it.
+  - The most recent winter(+08)/summer(+11) transition for Casey Station,
+    Antarctica was 2020-10-04 00:01.
+  - Remove obsolete files pacificnew, systemv, and yearistype.sh
+    from the distribution.
+
+* Thu Apr 30 2020 Patsy Griffin <patsy@redhat.com> - 2020a-1
+- Rebase to tzdata-2020a
+  - Morocco will spring forward on 2020-05-31 rather than
+    previously predicted 2020-05-24.
+  - Canada's Yukon region changed to year round UTC -07
+    effective 2020-03-08.
+  - America/Godthab was renamed to America/Nuuk.
+
+* Fri Jan 17 2020 Patsy Griffin <patsy@redhat.com> - 2019c-2
+- Don't build the factory zone for tzdata-java.
+  Patch provided by Severin Gehwolf <sgehwolf@redhat.com> (#1789468)
+
+* Mon Sep 23 2019 Patsy Griffin <patsy@redhat.com> - 2019c-1
+- Rebase to tzdata-2019c
+  - Fiji will observe DST from 2019-11-10 to 2020-01-12.
+  - Norfolk Island will begin observing Australian-style DST on 2019-10-06.
+- Add Factory back in to be more consistent with upstream.
+
 * Sat Jul 27 2019 Fedora Release Engineering <releng@fedoraproject.org> - 2019b-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild