diff --git a/ChangeLog b/ChangeLog
index 4c4c226..97130a9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/c++tools/ChangeLog b/c++tools/ChangeLog
index 2838c59..a0f5de5 100644
--- a/c++tools/ChangeLog
+++ b/c++tools/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/config/ChangeLog b/config/ChangeLog
index b2c7301..2fc36a2 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index ede00a8..998acf5 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/contrib/header-tools/ChangeLog b/contrib/header-tools/ChangeLog
index 82e5b4e..834d768 100644
--- a/contrib/header-tools/ChangeLog
+++ b/contrib/header-tools/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/contrib/reghunt/ChangeLog b/contrib/reghunt/ChangeLog
index 7ed3259..bdf2446 100644
--- a/contrib/reghunt/ChangeLog
+++ b/contrib/reghunt/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/contrib/regression/ChangeLog b/contrib/regression/ChangeLog
index 715711b..4afc692 100644
--- a/contrib/regression/ChangeLog
+++ b/contrib/regression/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/fixincludes/ChangeLog b/fixincludes/ChangeLog
index e210fb4..d02624f 100644
--- a/fixincludes/ChangeLog
+++ b/fixincludes/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-28  Xi Ruoyao  <xry111@xry111.site>
 
 	Backported from master:
diff --git a/gcc/BASE-VER b/gcc/BASE-VER
index 9e3b205..4d23cb8 100644
--- a/gcc/BASE-VER
+++ b/gcc/BASE-VER
@@ -1 +1 @@
-12.2.1
+12.3.0
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9005956..0737640 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-04-27  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 2965792..442fec8 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/gcc/analyzer/ChangeLog b/gcc/analyzer/ChangeLog
index 07989bb..d9abef6 100644
--- a/gcc/analyzer/ChangeLog
+++ b/gcc/analyzer/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-29  David Malcolm  <dmalcolm@redhat.com>
 
 	PR analyzer/109094
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 979bad4..054a533 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-04-18  Jason Merrill  <jason@redhat.com>
 
 	PR c++/107163
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index 2707d2a..1efe464 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-19  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index d185143..8de4af3 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-05-04  Jason Merrill  <jason@redhat.com>
 
 	Revert:
diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index 6e90fc4..4218c9a 100644
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-16  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	Backported from master:
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 7c23056..c8ecd75 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-04-23  Harald Anlauf  <anlauf@gmx.de>
 
 	Backported from master:
diff --git a/gcc/go/ChangeLog b/gcc/go/ChangeLog
index 6feb8ee..9d56754 100644
--- a/gcc/go/ChangeLog
+++ b/gcc/go/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/gcc/jit/ChangeLog b/gcc/jit/ChangeLog
index 87c31d2..0a45625 100644
--- a/gcc/jit/ChangeLog
+++ b/gcc/jit/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-29  David Malcolm  <dmalcolm@redhat.com>
 
 	* docs/internals/index.rst: Remove reference to ".c" extensions
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index ef2500b..29194ef 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-19  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/objc/ChangeLog b/gcc/objc/ChangeLog
index cce49e6..8a6bb82 100644
--- a/gcc/objc/ChangeLog
+++ b/gcc/objc/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/gcc/objcp/ChangeLog b/gcc/objcp/ChangeLog
index f486275..4324428 100644
--- a/gcc/objcp/ChangeLog
+++ b/gcc/objcp/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/gcc/po/ChangeLog b/gcc/po/ChangeLog
index 4971143..9f3f352 100644
--- a/gcc/po/ChangeLog
+++ b/gcc/po/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-10-03  Joseph Myers  <joseph@codesourcery.com>
 
 	* sv.po: Update.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index dc3a6c4..c2333b5 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-05-04  Jason Merrill  <jason@redhat.com>
 
 	Revert:
diff --git a/gnattools/ChangeLog b/gnattools/ChangeLog
index 0e24e46..c346a0e 100644
--- a/gnattools/ChangeLog
+++ b/gnattools/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-04-26  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* configure.ac (TOOLS_TARGET_PAIRS): Remove obsolete settings.
diff --git a/gotools/ChangeLog b/gotools/ChangeLog
index 56aeb54..2b1f752 100644
--- a/gotools/ChangeLog
+++ b/gotools/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/include/ChangeLog b/include/ChangeLog
index 89aeed6..5421d63 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/intl/ChangeLog b/intl/ChangeLog
index 6212de9..b5cebf7 100644
--- a/intl/ChangeLog
+++ b/intl/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libada/ChangeLog b/libada/ChangeLog
index e03a2e4..079da67 100644
--- a/libada/ChangeLog
+++ b/libada/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libatomic/ChangeLog b/libatomic/ChangeLog
index 3b2f24b..e56fba2 100644
--- a/libatomic/ChangeLog
+++ b/libatomic/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-03  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>
 
 	Backported from master:
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index b8a187b..edea0ee 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libcc1/ChangeLog b/libcc1/ChangeLog
index 9a172ba..80d9fd9 100644
--- a/libcc1/ChangeLog
+++ b/libcc1/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libcody/ChangeLog b/libcody/ChangeLog
index ca95582a..2570f8b 100644
--- a/libcody/ChangeLog
+++ b/libcody/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 8f9800d..9130d6a 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libcpp/po/ChangeLog b/libcpp/po/ChangeLog
index 8d5e5ce..515b048 100644
--- a/libcpp/po/ChangeLog
+++ b/libcpp/po/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-01-16  Joseph Myers  <joseph@codesourcery.com>
 
 	* ka.po: New.
diff --git a/libdecnumber/ChangeLog b/libdecnumber/ChangeLog
index 4a19f06..dac782b 100644
--- a/libdecnumber/ChangeLog
+++ b/libdecnumber/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libffi/ChangeLog b/libffi/ChangeLog
index fab989e..f9668c4 100644
--- a/libffi/ChangeLog
+++ b/libffi/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index e1cb5cd..673c62f 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libgcc/config/avr/libf7/ChangeLog b/libgcc/config/avr/libf7/ChangeLog
index a56461b..9250c60 100644
--- a/libgcc/config/avr/libf7/ChangeLog
+++ b/libgcc/config/avr/libf7/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-09-19  Georg-Johann Lay  <avr@gjlay.de>
 
 	Backported from master:
diff --git a/libgcc/config/libbid/ChangeLog b/libgcc/config/libbid/ChangeLog
index 16f5ca8..081d2bd 100644
--- a/libgcc/config/libbid/ChangeLog
+++ b/libgcc/config/libbid/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index feb1bf9..2d401ac 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-12-21  Tobias Burnus  <tobias@codesourcery.com>
 
 	PR libfortran/108056
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index aaf3ee7..8962add 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-19  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index f99b236..1b589fc 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-04-18  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libitm/ChangeLog b/libitm/ChangeLog
index 4d85f41..8915552 100644
--- a/libitm/ChangeLog
+++ b/libitm/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libobjc/ChangeLog b/libobjc/ChangeLog
index 8f90adb..03c4c48 100644
--- a/libobjc/ChangeLog
+++ b/libobjc/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/liboffloadmic/ChangeLog b/liboffloadmic/ChangeLog
index 7913897..ec15c09 100644
--- a/liboffloadmic/ChangeLog
+++ b/liboffloadmic/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index 7327053..953e1db 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-12-13  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* libdruntime/core/stdc/fenv.d: Compile in MIPS uClibc bindings on
diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog
index ea9831a..09f21e7 100644
--- a/libquadmath/ChangeLog
+++ b/libquadmath/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-03-19  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index b86d1cd..2f85d1d 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-01-04  Florian Weimer  <fweimer@redhat.com>
 
 	Backported from master:
diff --git a/libssp/ChangeLog b/libssp/ChangeLog
index b314037..938ef74 100644
--- a/libssp/ChangeLog
+++ b/libssp/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index b1951fb..3b6da1e 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
 
 	Backported from master:
diff --git a/libvtv/ChangeLog b/libvtv/ChangeLog
index 7871abc..f379043 100644
--- a/libvtv/ChangeLog
+++ b/libvtv/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/lto-plugin/ChangeLog b/lto-plugin/ChangeLog
index c1c7949..2f8aec4 100644
--- a/lto-plugin/ChangeLog
+++ b/lto-plugin/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/maintainer-scripts/ChangeLog b/maintainer-scripts/ChangeLog
index f91cc8d5..d7c5df2 100644
--- a/maintainer-scripts/ChangeLog
+++ b/maintainer-scripts/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.
diff --git a/zlib/ChangeLog b/zlib/ChangeLog
index 3de5d55..9b1c64e 100644
--- a/zlib/ChangeLog
+++ b/zlib/ChangeLog
@@ -1,3 +1,7 @@
+2023-05-08  Release Manager
+
+	* GCC 12.3.0 released.
+
 2022-08-19  Release Manager
 
 	* GCC 12.2.0 released.