diff --git a/ChangeLog b/ChangeLog
index 8026892..8bdc1b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/config/ChangeLog b/config/ChangeLog
index 6513881..d6932a7 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/contrib/ChangeLog b/contrib/ChangeLog
index abf6748..de30201 100644
--- a/contrib/ChangeLog
+++ b/contrib/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/contrib/header-tools/ChangeLog b/contrib/header-tools/ChangeLog
index 89b9163..35e0ddb 100644
--- a/contrib/header-tools/ChangeLog
+++ b/contrib/header-tools/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/contrib/reghunt/ChangeLog b/contrib/reghunt/ChangeLog
index 1177193..b3b0b5d 100644
--- a/contrib/reghunt/ChangeLog
+++ b/contrib/reghunt/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/contrib/regression/ChangeLog b/contrib/regression/ChangeLog
index 180be58..199be63 100644
--- a/contrib/regression/ChangeLog
+++ b/contrib/regression/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/fixincludes/ChangeLog b/fixincludes/ChangeLog
index 8cad739..9653a8a 100644
--- a/fixincludes/ChangeLog
+++ b/fixincludes/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-21  Iain Sandoe  <iain@sandoe.co.uk>
 
 	Backported from master:
diff --git a/gcc/BASE-VER b/gcc/BASE-VER
index da772b9..2cf514e 100644
--- a/gcc/BASE-VER
+++ b/gcc/BASE-VER
@@ -1 +1 @@
-10.4.1
+10.5.0
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 07632a7..aa5053a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-06-28  liuhongt  <hongtao.liu@intel.com>
 
 	* config/i386/i386-features.c (pass_insert_vzeroupper:gate):
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index d84839d..883a8d0 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/analyzer/ChangeLog b/gcc/analyzer/ChangeLog
index 02f7c76..ae4a1cd 100644
--- a/gcc/analyzer/ChangeLog
+++ b/gcc/analyzer/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/brig/ChangeLog b/gcc/brig/ChangeLog
index 3800d63..57064fc 100644
--- a/gcc/brig/ChangeLog
+++ b/gcc/brig/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 66bece3..f532c1f 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/c/ChangeLog b/gcc/c/ChangeLog
index b4367dd..92ad793 100644
--- a/gcc/c/ChangeLog
+++ b/gcc/c/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index ff2bf92..09367dc 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-06-30  Patrick Palka  <ppalka@redhat.com>
 
 	Backported from master:
diff --git a/gcc/d/ChangeLog b/gcc/d/ChangeLog
index dc5e5b3..45e5a90 100644
--- a/gcc/d/ChangeLog
+++ b/gcc/d/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-07-01  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	Backported from master:
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index 92b191f..d17da33 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-06-09  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/gcc/go/ChangeLog b/gcc/go/ChangeLog
index 40a57a3..1cd51bc 100644
--- a/gcc/go/ChangeLog
+++ b/gcc/go/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-06-29  Paul E. Murphy  <murphyp@linux.ibm.com>
 
 	Backported from master:
diff --git a/gcc/jit/ChangeLog b/gcc/jit/ChangeLog
index bb6aea1..f14f90f 100644
--- a/gcc/jit/ChangeLog
+++ b/gcc/jit/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/lto/ChangeLog b/gcc/lto/ChangeLog
index 26f23cd..b961c0c 100644
--- a/gcc/lto/ChangeLog
+++ b/gcc/lto/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/objc/ChangeLog b/gcc/objc/ChangeLog
index 7db71c0..d103661 100644
--- a/gcc/objc/ChangeLog
+++ b/gcc/objc/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/objcp/ChangeLog b/gcc/objcp/ChangeLog
index a366380..7dd4d7b 100644
--- a/gcc/objcp/ChangeLog
+++ b/gcc/objcp/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/po/ChangeLog b/gcc/po/ChangeLog
index 579aeb5..ea935dc 100644
--- a/gcc/po/ChangeLog
+++ b/gcc/po/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1df3c6b..a2e7c99 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-07-01  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	Backported from master:
diff --git a/gnattools/ChangeLog b/gnattools/ChangeLog
index 1011579..ba60ac3 100644
--- a/gnattools/ChangeLog
+++ b/gnattools/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/gotools/ChangeLog b/gotools/ChangeLog
index 36e1319..fd5ce5f 100644
--- a/gotools/ChangeLog
+++ b/gotools/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/include/ChangeLog b/include/ChangeLog
index 22c339d..c6b8914 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/intl/ChangeLog b/intl/ChangeLog
index 9251642..800413f 100644
--- a/intl/ChangeLog
+++ b/intl/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libada/ChangeLog b/libada/ChangeLog
index 4d71e10..13707c5 100644
--- a/libada/ChangeLog
+++ b/libada/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libatomic/ChangeLog b/libatomic/ChangeLog
index 483c314..61d609e 100644
--- a/libatomic/ChangeLog
+++ b/libatomic/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-03-03  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>
 
 	Backported from master:
diff --git a/libbacktrace/ChangeLog b/libbacktrace/ChangeLog
index 5667e71..9b6fb87 100644
--- a/libbacktrace/ChangeLog
+++ b/libbacktrace/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libcc1/ChangeLog b/libcc1/ChangeLog
index 3b9bf2a..3b1667a3 100644
--- a/libcc1/ChangeLog
+++ b/libcc1/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 6c6dc95..51b11e0 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-08-02  Lewis Hyatt  <lhyatt@gmail.com>
 
 	Backported from master:
diff --git a/libcpp/po/ChangeLog b/libcpp/po/ChangeLog
index bbde9e2..963ade9 100644
--- a/libcpp/po/ChangeLog
+++ b/libcpp/po/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libdecnumber/ChangeLog b/libdecnumber/ChangeLog
index d0f67c5..639f980 100644
--- a/libdecnumber/ChangeLog
+++ b/libdecnumber/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libffi/ChangeLog b/libffi/ChangeLog
index ae5652d..a2e761d 100644
--- a/libffi/ChangeLog
+++ b/libffi/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 0ed255b..dedb3ef 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-21  Iain Sandoe  <iain@sandoe.co.uk>
 
 	Backported from master:
diff --git a/libgcc/config/avr/libf7/ChangeLog b/libgcc/config/avr/libf7/ChangeLog
index 88e90a8..d7bfc57 100644
--- a/libgcc/config/avr/libf7/ChangeLog
+++ b/libgcc/config/avr/libf7/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 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 16ab7f6..43c2954 100644
--- a/libgcc/config/libbid/ChangeLog
+++ b/libgcc/config/libbid/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libgfortran/ChangeLog b/libgfortran/ChangeLog
index eb45652..3e8994f 100644
--- a/libgfortran/ChangeLog
+++ b/libgfortran/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 3b392e3..9622abc 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libhsail-rt/ChangeLog b/libhsail-rt/ChangeLog
index cf5f72d..fc40c01 100644
--- a/libhsail-rt/ChangeLog
+++ b/libhsail-rt/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index 844cbca..35aacfe 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libitm/ChangeLog b/libitm/ChangeLog
index 992e395..3d6d638 100644
--- a/libitm/ChangeLog
+++ b/libitm/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libobjc/ChangeLog b/libobjc/ChangeLog
index cda303d..f428454 100644
--- a/libobjc/ChangeLog
+++ b/libobjc/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/liboffloadmic/ChangeLog b/liboffloadmic/ChangeLog
index da4c38b..d27afcc 100644
--- a/liboffloadmic/ChangeLog
+++ b/liboffloadmic/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index 39a298c..9b16d73 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-12-13  Iain Buclaw  <ibuclaw@gdcproject.org>
 
 	* src/std/path.d (expandTilde): Handle more errno codes that could be
diff --git a/libquadmath/ChangeLog b/libquadmath/ChangeLog
index 02050e3..29e9f9f 100644
--- a/libquadmath/ChangeLog
+++ b/libquadmath/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from master:
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 7ec5fc8..3d0697e 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-05-21  Iain Sandoe  <iain@sandoe.co.uk>
 
 	Backported from master:
diff --git a/libssp/ChangeLog b/libssp/ChangeLog
index 5acf87f..a0fffdb 100644
--- a/libssp/ChangeLog
+++ b/libssp/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 9e55b4e..928a634 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2023-06-23  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master:
diff --git a/libvtv/ChangeLog b/libvtv/ChangeLog
index 08e7d9d..0d4cfed 100644
--- a/libvtv/ChangeLog
+++ b/libvtv/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/lto-plugin/ChangeLog b/lto-plugin/ChangeLog
index e5d2548..4fb296d5 100644
--- a/lto-plugin/ChangeLog
+++ b/lto-plugin/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/maintainer-scripts/ChangeLog b/maintainer-scripts/ChangeLog
index 67665d7..42ef93b 100644
--- a/maintainer-scripts/ChangeLog
+++ b/maintainer-scripts/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.
diff --git a/zlib/ChangeLog b/zlib/ChangeLog
index 31c5885..5f0ed98 100644
--- a/zlib/ChangeLog
+++ b/zlib/ChangeLog
@@ -1,3 +1,7 @@
+2023-07-07  Release Manager
+
+	* GCC 10.5.0 released.
+
 2022-06-28  Release Manager
 
 	* GCC 10.4.0 released.