diff --git a/CMakeLists.txt b/CMakeLists.txt
index 39185e6..a6d1ff6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -88,6 +88,10 @@ if (${IS_GNU} OR ${IS_CLANG})
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fstrict-enums -pipe -funwind-tables -fasynchronous-unwind-tables -frtti -fexceptions")
     set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ffunction-sections -fdata-sections -fmerge-all-constants -ftree-vectorize -fno-math-errno")
     include(CheckCXXCompilerFlag)
+    check_cxx_compiler_flag("-Oz" Z_OPTIMIZATION_SUPPORTED)
+    if (Z_OPTIMIZATION_SUPPORTED)
+        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Oz")
+    endif()
     set(CF_PROTECTION "-fcf-protection")
     check_cxx_compiler_flag("${CF_PROTECTION}" CF_PROTECTION_SUPPORTED)
     if (CF_PROTECTION_SUPPORTED)