diff --git a/README.md b/README.md
index 6bef4b0e..f3671faf 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,7 @@ At the moment, successfully building the following versions:
   gcc-10.2.0
   gcc-10.3.0
   gcc-10.4.0
+  gcc-10.5.0
   gcc-11.1.0
   gcc-11.2.0
   gcc-11.3.0
@@ -143,7 +144,7 @@ At the moment, successfully building the following versions:
   gcc-7-branch (currently 7.5.1 prerelease)
   gcc-8-branch (currently 8.5.1 prerelease)
   gcc-9-branch (currently 9.5.1-prerelease)
-  gcc-10-branch (currently 10.4.1-prerelease)
+  gcc-10-branch (currently 10.5.1-prerelease)
   gcc-11-branch (currently 11.4.1-prerelease)
   gcc-12-branch (currently 12.3.1-prerelease)
   gcc-13-branch (currently 13.1.1-prerelease)
diff --git a/build b/build
index dfc30daf..3d19b5b8 100755
--- a/build
+++ b/build
@@ -162,7 +162,8 @@ readonly RUN_ARGS="$@"
 	echo "    gcc-10.2.0 (10.2.0 release)"
 	echo "    gcc-10.3.0 (10.3.0 release)"
 	echo "    gcc-10.4.0 (10.4.0 release)"
-	echo "    gcc-10-branch (currently 10.4.1-prerelease)"
+	echo "    gcc-10.5.0 (10.5.0 release)"
+	echo "    gcc-10-branch (currently 10.5.1-prerelease)"
 	echo "    gcc-11.1.0 (11.1.0 release)"
 	echo "    gcc-11.2.0 (11.2.0 release)"
 	echo "    gcc-11.3.0 (11.3.0 release)"
diff --git a/library/functions.sh b/library/functions.sh
index 5f3268d1..4a195533 100644
--- a/library/functions.sh
+++ b/library/functions.sh
@@ -973,7 +973,7 @@ function func_map_gcc_name_to_gcc_version {
 		gcc-7-branch)	echo "7.5.1" ;;
 		gcc-8-branch)	echo "8.5.1" ;;
 		gcc-9-branch)	echo "9.5.1" ;;
-		gcc-10-branch)	echo "10.4.1" ;;
+		gcc-10-branch)	echo "10.5.1" ;;
 		gcc-11-branch)	echo "11.4.1" ;;
 		gcc-12-branch)	echo "12.3.1" ;;
 		gcc-13-branch)	echo "13.1.1" ;;
diff --git a/scripts/gcc-10-branch.sh b/scripts/gcc-10-branch.sh
index 4a2cdcb4..5e861320 100644
--- a/scripts/gcc-10-branch.sh
+++ b/scripts/gcc-10-branch.sh
@@ -61,6 +61,12 @@ PKG_PATCHES=(
 	gcc/gcc-10-ktietz-libgomp.patch
 	gcc/gcc-libgomp-ftime64.patch
 	gcc/0020-libgomp-Don-t-hard-code-MS-printf-attributes.patch
+	gcc/gcc-10.4.0-libiberty-pic-and-jit-shared.patch
+	gcc/c51f1e7427e6a5ae2a6d82b5a790df77a3adc99a.patch
+	$( [[ $RUNTIME_MAJOR_VERSION -ge 10 ]] \
+		&& echo "gcc/0001-gcc-config-i386-mingw32.h-Ensure-lmsvcrt-precede-lke.patch" \
+	)
+	gcc/gcc-11-replace-abort-with-fancy_abort.patch
 )
 
 #
diff --git a/scripts/gcc-10.5.0.sh b/scripts/gcc-10.5.0.sh
new file mode 100644
index 00000000..22ece7ae
--- /dev/null
+++ b/scripts/gcc-10.5.0.sh
@@ -0,0 +1,162 @@
+
+#
+# The BSD 3-Clause License. http://www.opensource.org/licenses/BSD-3-Clause
+#
+# This file is part of MinGW-W64(mingw-builds: https://github.com/niXman/mingw-builds) project.
+# Copyright (c) 2011-2023 by niXman (i dotty nixman doggy gmail dotty com)
+# Copyright (c) 2012-2015 by Alexpux (alexpux doggy gmail dotty com)
+# All rights reserved.
+#
+# Project: MinGW-Builds ( https://github.com/niXman/mingw-builds )
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# - Redistributions of source code must retain the above copyright
+#     notice, this list of conditions and the following disclaimer.
+# - Redistributions in binary form must reproduce the above copyright
+#     notice, this list of conditions and the following disclaimer in
+#     the documentation and/or other materials provided with the distribution.
+# - Neither the name of the 'MinGW-W64' nor the names of its contributors may
+#     be used to endorse or promote products derived from this software
+#     without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+# **************************************************************************
+
+PKG_VERSION=10.5.0
+PKG_NAME=gcc-${PKG_VERSION}
+PKG_DIR_NAME=gcc-${PKG_VERSION}
+PKG_TYPE=.tar.xz
+PKG_URLS=(
+	"https://ftpmirror.gnu.org/gnu/gcc/gcc-${PKG_VERSION}/gcc-${PKG_VERSION}${PKG_TYPE}"
+)
+
+PKG_PRIORITY=main
+
+#
+
+PKG_PATCHES=(
+	gcc/gcc-4.7-stdthreads.patch
+	gcc/gcc-5.1-iconv.patch
+	gcc/gcc-4.8-libstdc++export.patch
+	gcc/gcc-4.8.2-fix-for-windows-not-minding-non-existant-parent-dirs.patch
+	gcc/gcc-4.8.2-windows-lrealpath-no-force-lowercase-nor-backslash.patch
+	gcc/gcc-4.9.1-enable-shared-gnat-implib.mingw.patch
+	gcc/gcc-5.1.0-make-xmmintrin-header-cplusplus-compatible.patch
+	gcc/gcc-5.2-fix-mingw-pch.patch
+	gcc/gcc-5-dwarf-regression.patch
+	gcc/gcc-5.1.0-fix-libatomic-building-for-threads=win32.patch
+	gcc/gcc-10-ktietz-libgomp.patch
+	gcc/gcc-libgomp-ftime64.patch
+	gcc/0020-libgomp-Don-t-hard-code-MS-printf-attributes.patch
+	gcc/gcc-10.4.0-libiberty-pic-and-jit-shared.patch
+	gcc/c51f1e7427e6a5ae2a6d82b5a790df77a3adc99a.patch
+	$( [[ $RUNTIME_MAJOR_VERSION -ge 10 ]] \
+		&& echo "gcc/0001-gcc-config-i386-mingw32.h-Ensure-lmsvcrt-precede-lke.patch" \
+	)
+    gcc/gcc-11-replace-abort-with-fancy_abort.patch
+)
+
+#
+
+PKG_CONFIGURE_FLAGS=(
+	--host=$HOST
+	--build=$BUILD
+	--target=$TARGET
+	#
+	--prefix=$MINGWPREFIX
+	--with-sysroot=$PREFIX
+	#--with-gxx-include-dir=$MINGWPREFIX/$TARGET/include/c++
+	#
+	$LINK_TYPE_GCC
+	#
+	$( [[ $USE_MULTILIB == yes ]] \
+		&& echo "--enable-targets=all --enable-multilib" \
+		|| echo "--disable-multilib" \
+	)
+	$( [[ "$DISABLE_GCC_LTO" == yes ]] \
+		&& echo "--enable-languages=$ENABLE_LANGUAGES" \
+		|| echo "--enable-languages=$ENABLE_LANGUAGES,lto"
+	)
+	--enable-libstdcxx-time=yes
+	--enable-threads=$THREADS_MODEL
+	--enable-libgomp
+	--enable-libatomic
+	$( [[ "$MSVCRT_PHOBOS_OK" == yes && "$D_LANG_ENABLED" == yes ]] \
+		&& echo "--enable-libphobos"
+	)
+	$( [[ "$DISABLE_GCC_LTO" == yes ]] \
+		&& echo "--disable-lto" \
+		|| echo "--enable-lto"
+	)
+	--enable-graphite
+	--enable-checking=release
+	--enable-fully-dynamic-string
+	--enable-version-specific-runtime-libs
+	--enable-libstdcxx-filesystem-ts=yes
+	$( [[ $EXCEPTIONS_MODEL == dwarf ]] \
+		&& echo "--disable-sjlj-exceptions --with-dwarf2" \
+	)
+	$( [[ $EXCEPTIONS_MODEL == sjlj ]] \
+		&& echo "--enable-sjlj-exceptions" \
+	)
+	#
+	--disable-libstdcxx-pch
+	--disable-libstdcxx-debug
+	$( [[ $BOOTSTRAPING == yes ]] \
+		&& echo "--enable-bootstrap" \
+		|| echo "--disable-bootstrap" \
+	)
+	--disable-rpath
+	--disable-win32-registry
+	--disable-nls
+	--disable-werror
+	--disable-symvers
+	#
+	--with-gnu-as
+	--with-gnu-ld
+	#
+	$PROCESSOR_OPTIMIZATION
+	$PROCESSOR_TUNE
+	#
+	--with-libiconv
+	--with-system-zlib
+	--with-{gmp,mpfr,mpc,isl}=$PREREQ_DIR/$HOST-$LINK_TYPE_SUFFIX
+	--with-pkgversion="\"$BUILD_ARCHITECTURE-$THREADS_MODEL-$EXCEPTIONS_MODEL${REV_STRING}, $MINGW_W64_PKG_STRING\""
+	--with-bugurl=$BUG_URL
+	#
+	CFLAGS="\"$COMMON_CFLAGS\""
+	CXXFLAGS="\"$COMMON_CXXFLAGS\""
+	CPPFLAGS="\"$COMMON_CPPFLAGS\""
+	LDFLAGS="\"$COMMON_LDFLAGS $( [[ $BUILD_ARCHITECTURE == i686 ]] && echo -Wl,--large-address-aware )\""
+	LD_FOR_TARGET=$PREFIX/bin/ld.exe
+)
+
+#
+
+PKG_MAKE_FLAGS=(
+	-j$JOBS
+	all
+)
+
+#
+
+PKG_INSTALL_FLAGS=(
+	-j1
+	DESTDIR=$BASE_BUILD_DIR
+	$( [[ $STRIP_ON_INSTALL == yes ]] && echo install-strip || echo install )
+)
+
+# **************************************************************************