diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb6af08..5e352f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,11 @@ if (WIN32 AND NOT MSVC)
     set(CMAKE_CXX_COMPILER "C:/TDM-GCC-64/bin/g++.exe" CACHE FILEPATH "C++ Compiler" FORCE)
     message(STATUS "[UMSKT] Forcing use of TDM-GCC in C:/TDM-GCC-64")
     
+    # Add size optimization flags for GCC
+    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -Os -fno-exceptions -fno-rtti -ffunction-sections -fdata-sections")
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Os -fno-exceptions -fno-rtti -ffunction-sections -fdata-sections")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} -Wl,--gc-sections")
+    
     # Configure windres for resource compilation
     set(CMAKE_RC_COMPILER "C:/TDM-GCC-64/bin/windres.exe")
     set(CMAKE_RC_COMPILER_INIT windres)
@@ -123,13 +128,13 @@ ENDIF()
 IF(MSVC)
     SET(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
     IF(NOT BUILD_SHARED_LIBS)
-        SET(CMAKE_CXX_FLAGS_RELEASE "/MT")
+        SET(CMAKE_CXX_FLAGS_RELEASE "/MT /Os /GL /GS- /Gy")
         SET(CMAKE_CXX_FLAGS_DEBUG "/MTd")
     ELSE()
-        SET(CMAKE_CXX_FLAGS_RELEASE "/MD")
+        SET(CMAKE_CXX_FLAGS_RELEASE "/MD /Os /GL /GS- /Gy")
         SET(CMAKE_CXX_FLAGS_DEBUG "/MDd")
     ENDIF()
-    SET(CMAKE_EXE_LINKER_FLAGS "/INCREMENTAL:NO /NODEFAULTLIB:MSVCRT")
+    SET(CMAKE_EXE_LINKER_FLAGS "/INCREMENTAL:NO /NODEFAULTLIB:MSVCRT /OPT:REF /OPT:ICF")
     SET(CMAKE_ENABLE_EXPORTS ON)
     SET(UMSKT_EXE_WINDOWS_EXTRA src/windows/umskt.rc)
     SET(UMSKT_EXE_WINDOWS_DLL src/windows/dllmain.cpp)