diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index d27e42c..3ecf560 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -115,8 +115,9 @@ jobs:
     strategy:
       matrix:
         config:
-          - {os: ubuntu-20.04, c: gcc-11, cpp: g++-11}
-          - {os: ubuntu-22.04, c: gcc-12, cpp: g++-12}
+          - {os: ubuntu-20.04, c: gcc-7, cpp: g++-7, flags: "-Wno-lto-type-mismatch"}
+          - {os: ubuntu-20.04, c: gcc-11, cpp: g++-11, flags: ""}
+          - {os: ubuntu-22.04, c: gcc-12, cpp: g++-12, flags: ""}
 
     steps:
     - name: Install dependencies
@@ -134,7 +135,7 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake .. -DCMAKE_C_COMPILER=${{ matrix.config.c }} -DCMAKE_CXX_COMPILER=${{ matrix.config.cpp }} -DCMAKE_C_FLAGS='-flto=2' -DCMAKE_CXX_FLAGS='-flto=2'
+        cmake .. -DCMAKE_C_COMPILER=${{ matrix.config.c }} -DCMAKE_CXX_COMPILER=${{ matrix.config.cpp }} -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -flto=2' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -flto=2'
         make -j$(nproc)
 
     - name: Run RandomX tests
@@ -147,7 +148,7 @@ jobs:
         cd tests
         mkdir build
         cd build
-        cmake .. -DCMAKE_C_COMPILER=${{ matrix.config.c }} -DCMAKE_CXX_COMPILER=${{ matrix.config.cpp }} -DCMAKE_C_FLAGS='-flto=2' -DCMAKE_CXX_FLAGS='-flto=2'
+        cmake .. -DCMAKE_C_COMPILER=${{ matrix.config.c }} -DCMAKE_CXX_COMPILER=${{ matrix.config.cpp }} -DCMAKE_C_FLAGS='${{ matrix.config.flags }} -flto=2' -DCMAKE_CXX_FLAGS='${{ matrix.config.flags }} -flto=2'
         make -j$(nproc)
 
     - name: Run tests
diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index 7b81e86..f1520d8 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -1,6 +1,6 @@
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)
@@ -35,7 +35,11 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 		set(GENERAL_FLAGS "${GENERAL_FLAGS} -fno-omit-frame-pointer -fsanitize=address")
 	endif()
 
-	set(WARNING_FLAGS "-Wall -Wextra -Wcast-qual -Wlogical-op -Wstrict-overflow=2 -Wundef -Wformat=2 -Wpointer-arith -Werror")
+	set(WARNING_FLAGS "-Wall -Wextra -Wcast-qual -Wlogical-op -Wundef -Wformat=2 -Wpointer-arith -Werror")
+
+	if (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.5.0)
+		set(WARNING_FLAGS "${WARNING_FLAGS} -Wstrict-overflow=2")
+	endif()
 
 	if (DEV_WITH_TSAN OR DEV_WITH_UBSAN OR DEV_WITH_ASAN)
 		set(OPTIMIZATION_FLAGS "-Og -g")
diff --git a/cppcheck/run.cmd b/cppcheck/run.cmd
index fa96b95..12875bf 100644
--- a/cppcheck/run.cmd
+++ b/cppcheck/run.cmd
@@ -1,5 +1,5 @@
 @echo off
-"..\cppcheck-main\bin\cppcheck.exe" --project=..\build\p2pool.vcxproj --project-configuration="Release|x64" -DSIZE_MAX=UINT64_MAX -DRAPIDJSON_ENDIAN=RAPIDJSON_LITTLEENDIAN --platform=win64 --std=c++14 --enable=all --inconclusive --inline-suppr --template="{file}:{line}:{id}{inconclusive: INCONCLUSIVE} {message}" --suppressions-list=suppressions.txt --output-file=errors_full.txt --max-ctu-depth=3 --check-level=exhaustive --checkers-report=checkers_report.txt
+"..\cppcheck-main\bin\cppcheck.exe" --project=..\build\p2pool.vcxproj --project-configuration="Release|x64" -DSIZE_MAX=UINT64_MAX -DRAPIDJSON_ENDIAN=RAPIDJSON_LITTLEENDIAN --platform=win64 --std=c++17 --enable=all --inconclusive --inline-suppr --template="{file}:{line}:{id}{inconclusive: INCONCLUSIVE} {message}" --suppressions-list=suppressions.txt --output-file=errors_full.txt --max-ctu-depth=3 --check-level=exhaustive --checkers-report=checkers_report.txt
 findstr /V /C:"external\src" errors_full.txt > errors_filtered0.txt
 findstr /V /C:":checkersReport" errors_filtered0.txt > errors_filtered.txt
 for /f %%i in ("errors_filtered.txt") do set size=%%~zi
diff --git a/cppcheck/run.sh b/cppcheck/run.sh
index e4ad949..1bd54a7 100755
--- a/cppcheck/run.sh
+++ b/cppcheck/run.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-../cppcheck-main/cppcheck --project=../build/compile_commands.json -DSIZE_MAX=UINT64_MAX -DRAPIDJSON_ENDIAN=RAPIDJSON_LITTLEENDIAN -D__SSE2__=1 --platform=unix64 --std=c++14 --enable=all --inconclusive --inline-suppr --template="{file}:{line}:{id}{inconclusive: INCONCLUSIVE} {message}" --suppressions-list=suppressions.txt --output-file=errors_full.txt --max-ctu-depth=3 --check-level=exhaustive --checkers-report=checkers_report.txt
+../cppcheck-main/cppcheck --project=../build/compile_commands.json -DSIZE_MAX=UINT64_MAX -DRAPIDJSON_ENDIAN=RAPIDJSON_LITTLEENDIAN -D__SSE2__=1 --platform=unix64 --std=c++17 --enable=all --inconclusive --inline-suppr --template="{file}:{line}:{id}{inconclusive: INCONCLUSIVE} {message}" --suppressions-list=suppressions.txt --output-file=errors_full.txt --max-ctu-depth=3 --check-level=exhaustive --checkers-report=checkers_report.txt
 grep -v 'external' errors_full.txt > errors_filtered0.txt
 grep -v ':checkersReport' errors_filtered0.txt > errors_filtered.txt
 if [ -s errors_filtered.txt ]; then
diff --git a/external/src/RandomX b/external/src/RandomX
index 7b1e4df..121f6dd 160000
--- a/external/src/RandomX
+++ b/external/src/RandomX
@@ -1 +1 @@
-Subproject commit 7b1e4df779cae4eb0a33e74fc292b94158d7f69f
+Subproject commit 121f6dda58e6b3d0bc428f0dede1a11728acd8fe
diff --git a/src/util.h b/src/util.h
index d58385e..74dd9e8 100644
--- a/src/util.h
+++ b/src/util.h
@@ -19,7 +19,7 @@
 
 #ifdef _MSC_VER
 #pragma warning(push)
-#pragma warning(disable : 4623 5026 5027)
+#pragma warning(disable : 4623 5026 5027 5262)
 #endif
 
 #define ROBIN_HOOD_MALLOC(size) p2pool::malloc_hook(size)
@@ -60,27 +60,15 @@ struct nocopy_nomove
 };
 
 template<typename T>
-struct ScopeGuard
+struct ScopeGuard : public nocopy_nomove
 {
 	explicit FORCEINLINE ScopeGuard(T&& handler) : m_handler(std::move(handler)) {}
 	FORCEINLINE ~ScopeGuard() { m_handler(); }
 
 	T m_handler;
-
-	// Disable copying/moving of ScopeGuard objects
-
-	// We can't declare copy constructor as explicitly deleted because of copy elision semantics
-	// Just leave it without definition and it'll fail when linking if someone tries to copy a ScopeGuard object
-	ScopeGuard(const ScopeGuard&);
-
-private:
-	ScopeGuard& operator=(const ScopeGuard&) = delete;
-	ScopeGuard& operator=(ScopeGuard&&) = delete;
 };
 
-template<typename T> FORCEINLINE ScopeGuard<T> on_scope_leave(T&& handler) { return ScopeGuard<T>(std::move(handler)); }
-
-#define ON_SCOPE_LEAVE(...) auto CONCAT(scope_guard_, __LINE__) = on_scope_leave(__VA_ARGS__);
+#define ON_SCOPE_LEAVE(...) auto CONCAT(scope_guard_, __LINE__) = ScopeGuard{ __VA_ARGS__ };
 
 struct MinerCallbackHandler
 {
diff --git a/tests/cmake/flags.cmake b/tests/cmake/flags.cmake
index dd283a7..47f201a 100644
--- a/tests/cmake/flags.cmake
+++ b/tests/cmake/flags.cmake
@@ -1,6 +1,6 @@
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)