diff --git a/.gitignore b/.gitignore
index 1df56b5..2959fc4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,5 @@
 /tzdata2023b.tar.gz
 /tzcode2023c.tar.gz
 /tzdata2023c.tar.gz
+/tzcode2023d.tar.gz
+/tzdata2023d.tar.gz
diff --git a/0002-Fix-have-snprintf-error.patch b/0002-Fix-have-snprintf-error.patch
deleted file mode 100644
index cafdf4d..0000000
--- a/0002-Fix-have-snprintf-error.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -Nrup a/Makefile b/Makefile
---- a/Makefile	2017-10-23 18:03:40.237177646 -0400
-+++ b/Makefile	2017-10-23 18:06:20.060683518 -0400
-@@ -292,7 +292,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fn
- # January's first Monday when a "%V" format is used and January 1
- # falls on a Friday, Saturday, or Sunday.
- 
--CFLAGS=
-+CFLAGS= -DHAVE_SNPRINTF=1
- 
- # Linker flags.  Default to $(LFLAGS) for backwards compatibility
- # to release 2012h and earlier.
diff --git a/0002-Fix-have-snprintf.patch b/0002-Fix-have-snprintf.patch
new file mode 100644
index 0000000..b3dab7f
--- /dev/null
+++ b/0002-Fix-have-snprintf.patch
@@ -0,0 +1,12 @@
+diff -Nrup a/Makefile b/Makefile
+--- a/Makefile	2024-01-01 17:57:30.112884304 -0500
++++ b/Makefile	2024-01-01 17:59:33.641497622 -0500
+@@ -423,6 +423,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fn
+ # Uncomment the following line and edit its contents as needed.
+ 
+ #CFLAGS= -O 1
++CFLAGS= -DHAVE_SNPRINTF=1
+ 
+ 
+ # The name of a POSIX-like library archiver, its flags, C compiler,
+Binary files a/tzdata2023d-rearguard.tar.gz and b/tzdata2023d-rearguard.tar.gz differ
diff --git a/sources b/sources
index 2977752..d6b8914 100644
--- a/sources
+++ b/sources
@@ -1,4 +1,4 @@
 SHA512 (javazic-1.8-37392f2f5d59.tar.xz) = 2ba718dfeed53a3bd6b44e3dfe96338a609e482e4e6d942e2a7e622fc6c52606cb323ac3a59739c463e34f70fff217c0a61f5b3d3c4958eff2801b1504ee4204
 SHA512 (javazic.tar.gz) = c23a4a437a87d0792f23e98025520a11273fc3d12ef5dcf64af8332ed60ba9ce77eaadfd234cee92b3ca9dc08b9e4123e804745925d68ddbd0b2e1e9039e526b
-SHA512 (tzcode2023c.tar.gz) = fa18bae9c0e7c061bc9d5f5f2eb9967f0e4ddb2baafdee9887fa30cd0c60f4aa6f21eacffb17df0d59d26ff54d08c5dcefa98159309eba497e86443624913a82
-SHA512 (tzdata2023c.tar.gz) = 608bd286ebcbd0004cfdc1da183273f08aff61f90c8867661154453d77a05d421e4c46ad6d066a1fe2e87d5c82ec0f1c0224667a3b35f3180a3eb7f6ff84cbf5
+SHA512 (tzcode2023d.tar.gz) = 3994a5a060a7a5fffc6585f5191cf7679f9f9be44dbcee4d67d0e42c5b6020c308cb55caf8bf8d51554697665105a174cb470c8c4fc069438350f3bac725709b
+SHA512 (tzdata2023d.tar.gz) = 81832b2d738c28cecbcb3906cc07568c5ae574adc9de35b25d4bf613581c92d471d67213b4261a56f0ec02efcf211b4e298b7e1dc367c972e726b0a2e9498df4
diff --git a/tzdata.spec b/tzdata.spec
index 379c0dc..84db228 100644
--- a/tzdata.spec
+++ b/tzdata.spec
@@ -1,16 +1,16 @@
 Summary: Timezone data
 Name: tzdata
-Version: 2023c
-%define tzdata_version 2023c
-%define tzcode_version 2023c
-Release: 2%{?dist}
+Version: 2023d
+%define tzdata_version 2023d
+%define tzcode_version 2023d
+Release: 1%{?dist}
 License: Public Domain
 Group: System Environment/Base
 URL: https://www.iana.org/time-zones
 Source0: ftp://ftp.iana.org/tz/releases/tzdata%{tzdata_version}.tar.gz
 Source1: ftp://ftp.iana.org/tz/releases/tzcode%{tzcode_version}.tar.gz
 
-Patch002: 0002-Fix-have-snprintf-error.patch
+Patch002: 0002-Fix-have-snprintf.patch
 Patch003: 0003-continue-to-ship-posixrules.patch
 
 BuildRequires: gawk, glibc, perl-interpreter
@@ -149,6 +149,13 @@ echo ============END TESTING===========
 %{_datadir}/javazi-1.8
 
 %changelog
+* Mon Jan 01 2024 Patsy Griffin <patsy@redhat.com> - 2023d-1
+- Rebase to tzdata-2023d
+  - Include time zone changes for Ittoqqortoormiit, Greenland
+    and Vostok, Antarctica.
+  - Update the expiration date for the leap-seconds.list file.
+    No new leap seconds were added.
+
 * Mon Aug 21 2023 Patsy Griffin <patsy@redhat.com> - 2023c-2
 - Bump release to test recent process changes. (RHEL-1326)