diff --git a/.gitignore b/.gitignore
index a3c2842..7b2a10e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -176,3 +176,5 @@ noarch/
 /tzdata2019c.tar.gz
 /tzcode2020a.tar.gz
 /tzdata2020a.tar.gz
+/tzcode2020b.tar.gz
+/tzdata2020b.tar.gz
diff --git a/sources b/sources
index aee7575..e84890a 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
 SHA512 (javazic.tar.gz) = c23a4a437a87d0792f23e98025520a11273fc3d12ef5dcf64af8332ed60ba9ce77eaadfd234cee92b3ca9dc08b9e4123e804745925d68ddbd0b2e1e9039e526b
 SHA512 (javazic-1.8-37392f2f5d59.tar.xz) = 2ba718dfeed53a3bd6b44e3dfe96338a609e482e4e6d942e2a7e622fc6c52606cb323ac3a59739c463e34f70fff217c0a61f5b3d3c4958eff2801b1504ee4204
-SHA512 (tzcode2020a.tar.gz) = 5235d6590e844491df32375857f5f36ba0046f2d21a078375188dff79b125cf9b69136a0a431624de1ecfa9d53b62a232f0e6ee0b734294cec62b670e6265cb2
-SHA512 (tzdata2020a.tar.gz) = 2a2fc2e3ad8a6e4c574242296c847ad582c2c1d86add9c556e65c812d19b9528522e3c4dddb5239017091825d2acc5a2ccaf21dc41b900b6c300ef4264cc5a9d
+SHA512 (tzcode2020b.tar.gz) = 04849f196430717962cbeedf11bbba592c304eaff5d67350c936af83dc8e8cb4cedc1c5f461c984aef05124d6c0f13a874789dff77b85a4b399faf80d75537e0
+SHA512 (tzdata2020b.tar.gz) = 27ade698e61881e637ab04834633595cfbdb08fd97177e9731093165d1268a64dffa0570b5e137b9daa4374e6c6827ed01c476074ec61ec0b9a44a7f23479be9
diff --git a/tzdata.spec b/tzdata.spec
index 8ab7b61..035f760 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,8 +1,8 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2020a
-%define tzdata_version 2020a
-%define tzcode_version 2020a
+Version: 2020b
+%define tzdata_version 2020b
+%define tzcode_version 2020b
 Release: 1%{?dist}
 License: Public Domain
 Group: System Environment/Base
@@ -90,7 +90,7 @@ echo "%{name}%{tzdata_version}" >> VERSION
 %build
 
 FILES="africa antarctica asia australasia europe northamerica southamerica
-       pacificnew etcetera backward"
+       etcetera backward"
 
 mkdir zoneinfo/{,posix,right}
 zic -y ./yearistype -d zoneinfo -L /dev/null -p America/New_York $FILES
@@ -147,6 +147,16 @@ echo ============END TESTING===========
 %{_datadir}/javazi-1.8
 
 %changelog
+* Wed Oct 07 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.
+
 * Fri Apr 24 2020 Patsy Griffin <patsy@redhat.com> - 2020a-1
 - Rebase to tzdata-2020a
   - Morocco will spring forward on 2020-05-31 rather than