diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 247e1d03..b6aa2aa8 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -155,27 +155,26 @@ set(BUILD_TESTING OFF CACHE BOOL "" FORCE)
 set(BUILD_STATIC_LIBS ON)
 set(BUILD_SHARED_LIBS OFF)
 
-include(FetchContent)
-include(dependencies/fetch-vendor.cmake)
 
 # Bundled liblzma
-include(dependencies/xz.cmake)
+find_package(LibLZMA 5.8.2 REQUIRED)
 
 # Bundled zstd
-include(dependencies/zstd.cmake)
-
-# Remote nghttp2
-include(dependencies/nghttp2.cmake)
+find_package(zstd 1.5.7 REQUIRED)
+# zstd's config only exports imported targets, not the classic Find-module
+# variables the rest of this file uses; derive them here.
+set(ZSTD_LIBRARIES zstd::libzstd_shared)
+get_target_property(ZSTD_INCLUDE_DIR zstd::libzstd_shared INTERFACE_INCLUDE_DIRECTORIES)
 
 # Bundled yescrypt
 include(dependencies/yescrypt.cmake)
 
 
 # Bundled zlib
-include(dependencies/zlib.cmake)
+find_package(ZLIB REQUIRED)
 
 # Bundled libarchive
-include(dependencies/libarchive.cmake)
+find_package(LibArchive 3.8.6 REQUIRED)
 
 # libcurl
 if(APPLE)
@@ -189,12 +188,13 @@ if(APPLE)
     # Note: No need to find OpenSSL on macOS - we use native Security.framework
     # for RSA operations and CommonCrypto for hashing
 else()
-    include(dependencies/curl.cmake)
+    find_package(CURL 8.19.0 REQUIRED)
 endif()
 
 
 # Bundled libusb (for rpiboot Compute Module support)
-include(dependencies/libusb.cmake)
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(LIBUSB REQUIRED IMPORTED_TARGET libusb-1.0)
 
 # Add dependencies
 if (APPLE)
@@ -540,8 +540,8 @@ else()
     include(linux/PlatformPackaging.cmake)
 endif()
 
-add_dependencies(${PROJECT_NAME} zlibstatic yescrypt usb-1.0-static)
-include_directories(${CURL_INCLUDE_DIR} ${LibArchive_INCLUDE_DIR} ${LIBLZMA_INCLUDE_DIRS} ${LIBDRM_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIRS} ${ZSTD_INCLUDE_DIR} ${YESCRYPT_INCLUDE_DIR} ${LIBUSB_INCLUDE_DIR})
+add_dependencies(${PROJECT_NAME} yescrypt)
+include_directories(${CURL_INCLUDE_DIR} ${LibArchive_INCLUDE_DIR} ${LIBLZMA_INCLUDE_DIRS} ${LIBDRM_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIRS} ${ZSTD_INCLUDE_DIR} ${YESCRYPT_INCLUDE_DIR} ${LIBUSB_INCLUDE_DIRS})
 
 # Link different Qt components based on build type
 # rpiboot link libraries (libusb)