diff --git a/.chromium.metadata b/.chromium.metadata
index 96afe075..670e2c92 100644
--- a/.chromium.metadata
+++ b/.chromium.metadata
@@ -1 +1,3 @@
 9e4b3a30e852aa2add27115df620a113f7b9d921  SOURCES/chromium-115.0.5790.170.tar.xz
+a6033325fb1c8501bf1b4821acfebc076bca3ba1  SOURCES/chromium-gost-d4a3d8f7603c0e2dfa3642cca00c169d070e043e.tar.gz
+7f2dae4d92fd16ba75b35408e1c0a9003d27eb38  SOURCES/msspi-dddd947089110165db71fdc660157f102bab3660.tar.gz
diff --git a/.gitignore b/.gitignore
index a398c5e4..59dee401 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 SOURCES/chromium-115.0.5790.170.tar.xz
+SOURCES/chromium-gost-eff0aba6091bcf9ca9b8a6d31402dfe55ddaf8ce.tar.gz
+SOURCES/msspi-dddd947089110165db71fdc660157f102bab3660.tar.gz
diff --git a/SPECS/chromium.spec b/SPECS/chromium.spec
index d11c57dd..d8487a38 100644
--- a/SPECS/chromium.spec
+++ b/SPECS/chromium.spec
@@ -200,6 +200,13 @@
 %endif
 %endif
 
+# Build with GOST patches
+# https://github.com/deemru/chromium-gost/
+%global gost 1
+%define chromium_gost_commit d4a3d8f7603c0e2dfa3642cca00c169d070e043e
+%define msspi_commit dddd947089110165db71fdc660157f102bab3660
+%define chromium_path_gost %{_builddir}/chromium-gost
+
 ### From 2013 until early 2021, Google permitted distribution builds of
 ### Chromium to access Google APIs that added significant features to
 ### Chromium including, but not limited to, Sync and geolocation.
@@ -431,6 +438,10 @@ Source21: https://nodejs.org/dist/latest-v16.x/node-%{nodejs_version}-linux-arm6
 # Yandex logo
 Source50: https://upload.wikimedia.org/wikipedia/commons/f/f1/Yandex_logo_2021_Russian.svg
 
+# GOST
+Source101:	https://github.com/deemru/chromium-gost/archive/%{chromium_gost_commit}.tar.gz?/chromium-gost-%{chromium_gost_commit}.tar.gz
+Source102:	https://github.com/deemru/msspi/archive/%{msspi_commit}.tar.gz?/msspi-%{msspi_commit}.tar.gz
+
 %if %{clang}
 %if 0%{?rhel} == 7
 BuildRequires: llvm-toolset-%{llvm_toolset_version}
@@ -852,8 +863,16 @@ Provides: bundled(xdg-user-dirs)
 Requires(post): /usr/sbin/semanage
 Requires(post): /usr/sbin/restorecon
 
+%if %{gost}
+Provides: %{name}-gost-lib = %{version}-%{release}
+%endif
+
 %description
 Chromium is an open-source web browser, powered by WebKit (Blink).
+%if %{gost}
+chromium-gost patches are integrated, this Chromium supports GOST TLS
+if proprietary CryptoPro is installed.
+%endif
 
 %package common
 Summary: Files needed for both the headless_shell and full Chromium
@@ -921,6 +940,31 @@ udev.
 %prep
 %setup -q -n chromium-%{version}
 
+%if %{gost}
+rm -rf %{chromium_path_gost}
+mkdir -p %{chromium_path_gost}
+tar -C %{chromium_path_gost} --strip 1 -xf %{SOURCE101}
+sed -i \
+	-e "s,^#include <../ssl/internal.h>,#include \"${PWD}/third_party/boringssl/src/ssl/internal.h\",g" \
+	%{chromium_path_gost}/src/gostssl.cpp
+tar -C %{chromium_path_gost}/src/msspi --strip 1 -xf %{SOURCE102}
+sed -i'' %{chromium_path_gost}/patch/chromium.patch \
+	-e 's/ (Chromium GOST)//g' \
+	-e 's/Chromium GOST/Chromium/g' \
+	-e 's/Chromium-Gost/Chromium/g' \
+	-e 's/"chromium-gost"/"chromium-browser"/g' \
+	-e 's/"chromium-gost.desktop"/"chromium-browser.desktop"/g' \
+	-e 's/(%s; Chromium GOST)/(%s)/' \
+	--
+patch -p1 < %{chromium_path_gost}/patch/chromium.patch
+( cd ./third_party/boringssl/src
+patch -p1 < %{chromium_path_gost}/patch/boringssl.patch )
+
+cp -f %{chromium_path_gost}/src/gostssl.cpp third_party/boringssl/gostssl.cpp
+cp -f %{chromium_path_gost}/src/msspi/src/* third_party/boringssl
+cp -f %{chromium_path_gost}/src/msspi/third_party/cprocsp/include/* third_party/boringssl/src/include
+%endif
+
 ### Chromium Fedora Patches ###
 %patch -P0 -p1 -b .sandboxpie
 %patch -P1 -p1 -b .etc
@@ -1076,7 +1120,7 @@ cp -a %{_includedir}/libusb-1.0/libusb.h third_party/libusb/src/libusb/libusb.h
 %endif
 
 # Hard code extra version
-sed -i 's/getenv("CHROME_VERSION_EXTRA")/"MSVSphere"/' chrome/common/channel_info_posix.cc
+sed -i 's/getenv("CHROME_VERSION_EXTRA")/"MSVSphere, %{name} %{version}-%{release}%{?gost: + GOST TLS via CryptoPro}"/' chrome/common/channel_info_posix.cc
 
 # Fix hardcoded path in remoting code
 sed -i 's|/opt/google/chrome-remote-desktop|%{crd_path}|g' remoting/host/setup/daemon_controller_delegate_linux.cc
@@ -1714,6 +1758,9 @@ getent group chrome-remote-desktop >/dev/null || groupadd -r chrome-remote-deskt
 %{chromium_path}/chromedriver
 
 %changelog
+* Sun Aug 13 2023 Arkady L. Shane <ashejn@msvsphere.ru> - 115.0.5790.170-2.inferit.gost
+- Apply GOST patches
+
 * Fri Aug 11 2023 Sergey Cherevko <s.cherevko@msvsphere.ru> - 115.0.5790.170-1.inferit.1
 - Added Russian description and summary for gnome-software
 - Rebuilt for MSVSphere 9.2