diff --git a/ports/bit7z/fix_compile_options.patch b/ports/bit7z/fix_compile_options.patch
deleted file mode 100644
index 19f611a5bd..0000000000
--- a/ports/bit7z/fix_compile_options.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-diff --git a/cmake/CompilerOptions.cmake b/cmake/CompilerOptions.cmake
-index 1cdb84f..fd9346f 100644
---- a/cmake/CompilerOptions.cmake
-+++ b/cmake/CompilerOptions.cmake
-@@ -70,7 +70,7 @@ if( MSVC )
-         endforeach()
-     endif()
- else()
--    target_compile_options( ${LIB_TARGET} PRIVATE -Wall -Wextra -Werror -Wconversion -Wsign-conversion )
-+    target_compile_options( ${LIB_TARGET} PRIVATE -Wall -Wextra -Wconversion -Wsign-conversion )
- endif()
-
- # Extra warning flags for Clang
diff --git a/ports/bit7z/fix_dependencies.patch b/ports/bit7z/fix_dependencies.patch
new file mode 100644
index 0000000000..d59d0f2bb6
--- /dev/null
+++ b/ports/bit7z/fix_dependencies.patch
@@ -0,0 +1,111 @@
+diff --git a/cmake/Dependencies.cmake b/cmake/Dependencies.cmake
+index 1e787070..0c2cda4c 100644
+--- a/cmake/Dependencies.cmake
++++ b/cmake/Dependencies.cmake
+@@ -1,45 +1,45 @@
+-# Downloading the CPM.cmake package manager
+-set( CPM_DOWNLOAD_VERSION 0.42.3 )
+-set( CPM_DOWNLOAD_HASH "a609e875fd532b067174250f6abbc3dac22fe2d64869783fb1e80bda1625c844" )
+-if( CPM_SOURCE_CACHE )
+-    set( CPM_DOWNLOAD_LOCATION "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
+-elseif( DEFINED ENV{CPM_SOURCE_CACHE} )
+-    set( CPM_DOWNLOAD_LOCATION "$ENV{CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
+-else()
+-    set( CPM_DOWNLOAD_LOCATION "${CMAKE_BINARY_DIR}/cmake/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
+-endif()
+-get_filename_component( CPM_DOWNLOAD_LOCATION ${CPM_DOWNLOAD_LOCATION} ABSOLUTE )
+-set( CPM_USE_NAMED_CACHE_DIRECTORIES ON )
+-if( NOT ( EXISTS ${CPM_DOWNLOAD_LOCATION} ) )
+-    message( STATUS "Downloading CPM.cmake to ${CPM_DOWNLOAD_LOCATION}" )
+-    file( DOWNLOAD
+-          https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
+-          ${CPM_DOWNLOAD_LOCATION}
+-          SHOW_PROGRESS
+-          EXPECTED_HASH SHA256=${CPM_DOWNLOAD_HASH}
+-    )
+-endif()
+-include( ${CPM_DOWNLOAD_LOCATION} )
+-
+-# When enabled, dependencies are resolved with find_package() first (e.g., as provided by a package
+-# manager such as vcpkg) and only downloaded via CPM if not found. Disabled by default so that a
+-# plain checkout builds out-of-the-box by fetching its pinned dependencies.
+-option( BIT7Z_USE_SYSTEM_DEPENDENCIES "Resolve dependencies via find_package when available" OFF )
++# When enabled, every dependency is resolved exclusively via find_package() (e.g., as provided by a
++# package manager such as vcpkg): CPM is not bootstrapped and nothing is downloaded during configure.
++# Disabled by default so that a plain checkout builds out-of-the-box by fetching its pinned dependencies.
++option( BIT7Z_USE_SYSTEM_DEPENDENCIES "Resolve all dependencies via find_package (no CPM, no downloads)" OFF )
+ message( STATUS "Use system dependencies: ${BIT7Z_USE_SYSTEM_DEPENDENCIES}" )
+-if( BIT7Z_USE_SYSTEM_DEPENDENCIES )
+-    set( CPM_USE_LOCAL_PACKAGES ON )
++
++# Bootstrap the CPM.cmake package manager only when a dependency may actually be downloaded. With
++# system dependencies enabled, every dependency is resolved via find_package, so we skip the in-build
++# download entirely (e.g. package managers such as vcpkg forbid network access during configure/build).
++if( NOT BIT7Z_USE_SYSTEM_DEPENDENCIES )
++    # Downloading the CPM.cmake package manager
++    set( CPM_DOWNLOAD_VERSION 0.42.3 )
++    set( CPM_DOWNLOAD_HASH "a609e875fd532b067174250f6abbc3dac22fe2d64869783fb1e80bda1625c844" )
++    if( CPM_SOURCE_CACHE )
++        set( CPM_DOWNLOAD_LOCATION "${CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
++    elseif( DEFINED ENV{CPM_SOURCE_CACHE} )
++        set( CPM_DOWNLOAD_LOCATION "$ENV{CPM_SOURCE_CACHE}/cpm/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
++    else()
++        set( CPM_DOWNLOAD_LOCATION "${CMAKE_BINARY_DIR}/cmake/CPM_${CPM_DOWNLOAD_VERSION}.cmake" )
++    endif()
++    get_filename_component( CPM_DOWNLOAD_LOCATION ${CPM_DOWNLOAD_LOCATION} ABSOLUTE )
++    set( CPM_USE_NAMED_CACHE_DIRECTORIES ON )
++    if( NOT ( EXISTS ${CPM_DOWNLOAD_LOCATION} ) )
++        message( STATUS "Downloading CPM.cmake to ${CPM_DOWNLOAD_LOCATION}" )
++        file( DOWNLOAD
++              https://github.com/cpm-cmake/CPM.cmake/releases/download/v${CPM_DOWNLOAD_VERSION}/CPM.cmake
++              ${CPM_DOWNLOAD_LOCATION}
++              SHOW_PROGRESS
++              EXPECTED_HASH SHA256=${CPM_DOWNLOAD_HASH}
++        )
++    endif()
++    include( ${CPM_DOWNLOAD_LOCATION} )
+ endif()
+ 
+ # No custom path to 7-Zip's source code was specified by the user, so we resolve it ourselves.
+ if( BIT7Z_CUSTOM_7ZIP_PATH STREQUAL "" )
+     if( BIT7Z_USE_SYSTEM_DEPENDENCIES )
+-        # When using system dependencies, look for a 7-Zip package via find_package first. Unlike the
+-        # other dependencies, 7-Zip is searched for *without* a version: bit7z compiles against a specific
+-        # pinned 7-Zip source for the download path, but a system 7-Zip package (e.g., vcpkg's) may expose
+-        # a different version and may not even ship a config version file, in which case a versioned
+-        # find_package would be rejected. We therefore accept whatever 7-Zip the integrator provides.
+-        # (This is why 7-Zip cannot ride the generic CPM_USE_LOCAL_PACKAGES path, which would forward the
+-        # CPMAddPackage VERSION to find_package.)
++        # When using system dependencies, resolve 7-Zip via find_package. It is searched for *without*
++        # a version: bit7z compiles against a specific pinned 7-Zip source for the download path, but a
++        # system 7-Zip package (e.g., vcpkg's) may expose a different version and may not even ship a
++        # config version file, in which case a versioned find_package would be rejected. We therefore
++        # accept whatever 7-Zip the integrator provides.
+         find_package( 7zip CONFIG REQUIRED )
+     elseif ( BIT7Z_BUILD_FOR_P7ZIP )
+         # p7zip source code (calling the package as 7-zip just for simplify the code).
+@@ -79,13 +79,17 @@ endif()
+ # ghc::filesystem library
+ # Note: the public API tests app compiles using the C++11 standard, so it always needs ghc::filesystem.
+ if( NOT USE_STANDARD_FILESYSTEM OR BIT7Z_BUILD_TESTS )
+-    CPMAddPackage(
+-        NAME ghc_filesystem
+-        GITHUB_REPOSITORY rikyoz/filesystem
+-        GIT_TAG b99c2aebd5ddd6fb2f190731ba80b949fc3842b5
+-        GIT_PROGRESS ON
+-        DOWNLOAD_ONLY YES
+-    )
++    if( BIT7Z_USE_SYSTEM_DEPENDENCIES )
++        find_package( ghc_filesystem CONFIG REQUIRED )
++    else()
++        CPMAddPackage(
++            NAME ghc_filesystem
++            GITHUB_REPOSITORY rikyoz/filesystem
++            GIT_TAG b99c2aebd5ddd6fb2f190731ba80b949fc3842b5
++            GIT_PROGRESS ON
++            DOWNLOAD_ONLY YES
++        )
++    endif()
+ 
+     # Normalize to a plain "ghc_filesystem" target that the rest of the build and the tests link,
+     # regardless of whether it came from the downloaded sources or from find_package.
diff --git a/ports/bit7z/fix_dependency.patch b/ports/bit7z/fix_dependency.patch
deleted file mode 100644
index 93dc20ca54..0000000000
--- a/ports/bit7z/fix_dependency.patch
+++ /dev/null
@@ -1,28 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index f8ff6f0..855b78d 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -194,15 +194,22 @@ include( cmake/BuildOptions.cmake )
- include( cmake/CompilerOptions.cmake )
-
- # dependencies
--include( cmake/Dependencies.cmake )
-+# include( cmake/Dependencies.cmake )
-+find_package(7zip CONFIG REQUIRED)
-+add_library(7-zip ALIAS 7zip::7zip)
-
- # 7-zip source code
- target_link_libraries( ${LIB_TARGET} PRIVATE 7-zip )
-
- # filesystem library (needed if std::filesystem is not available)
-+if(0)
- if( ghc_filesystem_ADDED )
-     target_link_libraries( ${LIB_TARGET} PRIVATE ghc_filesystem )
- endif()
-+else()
-+    find_package(ghc_filesystem CONFIG REQUIRED)
-+    target_link_libraries(${LIB_TARGET} PRIVATE ghcFilesystem::ghc_filesystem )
-+endif()
-
- # public includes
- target_include_directories( ${LIB_TARGET} PUBLIC "$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>"
diff --git a/ports/bit7z/fix_install.patch b/ports/bit7z/fix_install.patch
deleted file mode 100644
index 7009fb995f..0000000000
--- a/ports/bit7z/fix_install.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 2eb8634..f8ff6f0 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -179,7 +179,7 @@ message( STATUS "Language Standard for bit7z: C++${CMAKE_CXX_STANDARD}" )
- set( LIB_TARGET bit7z${ARCH_POSTFIX} )
- add_library( ${LIB_TARGET} STATIC )
- target_sources( ${LIB_TARGET}
--                PUBLIC ${PUBLIC_HEADERS}
-+                # PUBLIC ${PUBLIC_HEADERS}
-                 PRIVATE ${HEADERS} ${SOURCES} )
-
- # additional target without the architecture suffix in the name
-@@ -246,3 +246,29 @@ endif()
- if( BIT7Z_BUILD_DOCS )
-     add_subdirectory( docs )
- endif()
-+
-+set_target_properties(${LIB_TARGET} PROPERTIES PUBLIC_HEADER "${PUBLIC_HEADERS}")
-+
-+include(CMakePackageConfigHelpers)
-+configure_package_config_file(
-+  "${CMAKE_CURRENT_SOURCE_DIR}/unofficial-bit7z-config.cmake.in"
-+  "${CMAKE_CURRENT_BINARY_DIR}/unofficial-bit7z-config.cmake"
-+  INSTALL_DESTINATION "share/unofficial-bit7z"
-+)
-+install(
-+  FILES "${CMAKE_CURRENT_BINARY_DIR}/unofficial-bit7z-config.cmake"
-+  DESTINATION "share/unofficial-bit7z"
-+)
-+
-+include(GNUInstallDirs)
-+install(
-+    TARGETS ${LIB_TARGET}
-+    EXPORT unofficial-bit7z-targets
-+    COMPONENT bit7z
-+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-+    PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/bit7z COMPONENT bit7z_development)
-+
-+install(EXPORT unofficial-bit7z-targets FILE unofficial-bit7z-targets.cmake NAMESPACE unofficial::bit7z:: DESTINATION share/unofficial-bit7z)
-+
diff --git a/ports/bit7z/portfile.cmake b/ports/bit7z/portfile.cmake
index bdfaac644d..d12caa235d 100644
--- a/ports/bit7z/portfile.cmake
+++ b/ports/bit7z/portfile.cmake
@@ -4,16 +4,11 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO rikyoz/bit7z
     REF "v${VERSION}"
-    SHA512 57727b2f4906802e1b5b07b8e8741da8e162d4491fa1ba59b9e7ec61f8b405654872c46184e7c83660cb9dbb61bbebc88787715fbcac1251de799ad157738358
+    SHA512 d240997e3b1f6eb8d0b19c89bf3b12044cbb10ba495b4ba535efc1cd04390157031a303025819b6fd9a6a51bdca7b59ad50df45055cbde9130ffd4c8279a0863
     HEAD_REF master
-    PATCHES
-      fix_install.patch
-      fix_dependency.patch
-      fix_compile_options.patch
+    PATCHES fix_dependencies.patch
 )
 
-file(COPY "${CMAKE_CURRENT_LIST_DIR}/unofficial-bit7z-config.cmake.in" DESTINATION "${SOURCE_PATH}")
-
 vcpkg_check_features(
     OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     FEATURES
@@ -23,6 +18,7 @@ vcpkg_check_features(
 vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
+        -DBIT7Z_USE_SYSTEM_DEPENDENCIES=ON
         -DBIT7Z_AUTO_FORMAT=ON
         -DBIT7Z_AUTO_PREFIX_LONG_PATHS=ON
         -DBIT7Z_DISABLE_ZIP_ASCII_PWD_CHECK=OFF
@@ -33,13 +29,14 @@ vcpkg_cmake_configure(
         -DBIT7Z_USE_SYSTEM_CODEPAGE=OFF
         -DBIT7Z_BUILD_TESTS=OFF
         -DBIT7Z_BUILD_DOCS=OFF
+        -DBIT7Z_WARNINGS_AS_ERRORS=OFF
         ${FEATURE_OPTIONS}
 )
 
 vcpkg_cmake_install()
 vcpkg_copy_pdbs()
 
-vcpkg_cmake_config_fixup(PACKAGE_NAME unofficial-bit7z CONFIG_PATH share/unofficial-bit7z)
+vcpkg_cmake_config_fixup(PACKAGE_NAME bit7z CONFIG_PATH lib/cmake/bit7z)
 
 vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")
 
diff --git a/ports/bit7z/unofficial-bit7z-config.cmake.in b/ports/bit7z/unofficial-bit7z-config.cmake.in
deleted file mode 100644
index cd432b6012..0000000000
--- a/ports/bit7z/unofficial-bit7z-config.cmake.in
+++ /dev/null
@@ -1,10 +0,0 @@
-@PACKAGE_INIT@
-
-include(CMakeFindDependencyMacro)
-
-find_dependency(7zip CONFIG)
-find_dependency(ghc_filesystem CONFIG)
-
-include("${CMAKE_CURRENT_LIST_DIR}/unofficial-bit7z-targets.cmake")
-
-check_required_components(bit7z)
diff --git a/ports/bit7z/vcpkg.json b/ports/bit7z/vcpkg.json
index 2196c1fda7..ff70eb09f6 100644
--- a/ports/bit7z/vcpkg.json
+++ b/ports/bit7z/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "bit7z",
-  "version": "4.0.12",
+  "version": "4.1.0",
   "description": "A C++ static library offering a clean and simple interface to the 7-zip shared libraries.",
   "homepage": "https://github.com/rikyoz/bit7z",
   "license": "MPL-2.0",
diff --git a/versions/b-/bit7z.json b/versions/b-/bit7z.json
index 405aae3da7..4bb74f5f35 100644
--- a/versions/b-/bit7z.json
+++ b/versions/b-/bit7z.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "9213e0a8efee92fd902fd7d486e88b7f105c1e4c",
+      "version": "4.1.0",
+      "port-version": 0
+    },
     {
       "git-tree": "9d58d639b9def3a5199444a1b3ad1c46af61901a",
       "version": "4.0.12",
diff --git a/versions/baseline.json b/versions/baseline.json
index ebf196a04a..c24d49fbae 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -741,7 +741,7 @@
       "port-version": 3
     },
     "bit7z": {
-      "baseline": "4.0.12",
+      "baseline": "4.1.0",
       "port-version": 0
     },
     "bitmagic": {