diff --git a/.gitignore b/.gitignore
index e829718..2e7df3c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -154,3 +154,5 @@ noarch/
 /tzdata2016j.tar.gz
 /tzdata2017a.tar.gz
 /tzcode2017a.tar.gz
+/tzcode2017b.tar.gz
+/tzdata2017b.tar.gz
diff --git a/sources b/sources
index a3d224d..422e6ae 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
 SHA512 (javazic.tar.gz) = c23a4a437a87d0792f23e98025520a11273fc3d12ef5dcf64af8332ed60ba9ce77eaadfd234cee92b3ca9dc08b9e4123e804745925d68ddbd0b2e1e9039e526b
 SHA512 (javazic-1.8-37392f2f5d59.tar.xz) = 2ba718dfeed53a3bd6b44e3dfe96338a609e482e4e6d942e2a7e622fc6c52606cb323ac3a59739c463e34f70fff217c0a61f5b3d3c4958eff2801b1504ee4204
-SHA512 (tzdata2017a.tar.gz) = fe57930711998a0755749a2bf1b32fdbc9e6ee249762017beea52eae7e521236396300fe2d79298fd81eb6d73fb7567884c35995ed248be06188329d937e3873
-SHA512 (tzcode2017a.tar.gz) = 36d744debd5263b6be39b3a9a146b7db1876f216a4bfc62b46631745861a9c03eda3220f213def86c724d3a11c41398c65c2e5d013ff2c1900e7bfc5e7844025
+SHA512 (tzcode2017b.tar.gz) = 9a73af4b868506d1f6287a8285dea489e68f6828da19509114f9144e2a2019c7fd28f4fb98ea907030d11d011ce3a87d99dbe43bca218beddafff151f0d61df1
+SHA512 (tzdata2017b.tar.gz) = 3e090dba1f52e4c63b4930b28f4bf38b56aabd6728f23094cb5801d10f4e464f17231f17b75b8866714bf98199c166ea840de0787b75b2274aa419a4e14bbc4d
diff --git a/tzdata.spec b/tzdata.spec
index 26c72a6..6dcb346 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,8 +1,8 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2017a
-%define tzdata_version 2017a
-%define tzcode_version 2017a
+Version: 2017b
+%define tzdata_version 2017b
+%define tzcode_version 2017b
 Release: 1%{?dist}
 License: Public Domain
 Group: System Environment/Base
@@ -122,6 +122,10 @@ rm -rf $RPM_BUILD_ROOT
 %{_datadir}/javazi-1.8
 
 %changelog
+* Sun Mar 26 2017 Patsy Franklin <pfrankli@redhat.com> - 2017b-1
+- Rebase to tzdata-2017b
+  - Haiti began observing DST on March 12, 2017.
+
 * Sun Mar 12 2017 Patsy Franklin <pfrankli@redhat.com> - 2017a-1
 - Rebase to tzdata-2017a
   - Mongolia no longer observes DST