diff --git a/thermion_dart/native/web/CMakeLists.txt b/thermion_dart/native/web/CMakeLists.txt
index e44c839d..3fb1dc21 100644
--- a/thermion_dart/native/web/CMakeLists.txt
+++ b/thermion_dart/native/web/CMakeLists.txt
@@ -22,6 +22,7 @@ set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORTED_FUNCTIONS=_malloc,stackAlloc,_free,sta
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sFULL_ES3)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sPTHREAD_POOL_SIZE=1)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sALLOW_BLOCKING_ON_MAIN_THREAD=1)
+set(EMCC_CFLAGS ${EMCC_CFLAGS} -sMALLOC=mimalloc)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sOFFSCREENCANVAS_SUPPORT=1)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sNO_DISABLE_EXCEPTION_CATCHING)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sASYNCIFY=0)
@@ -35,8 +36,8 @@ if(CMAKE_BUILD_TYPE STREQUAL "Debug")
   set(EMCC_CFLAGS ${EMCC_CFLAGS} -sASSERTIONS=2)
   set(EMCC_CFLAGS ${EMCC_CFLAGS} -sGL_ASSERTIONS=1)
   set(EMCC_CFLAGS ${EMCC_CFLAGS} -sGL_DEBUG=1)
-  # set(EMCC_CFLAGS ${EMCC_CFLAGS} -sSAFE_HEAP=1)
-  #add_compile_definitions(ENABLE_TRACING=1)
+  set(EMCC_CFLAGS ${EMCC_CFLAGS} -sSAFE_HEAP=1)
+  # add_compile_definitions(ENABLE_TRACING=1)
   set(EMCC_CFLAGS ${EMCC_CFLAGS} -sWARN_UNALIGNED=1)
   set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wcast-align -Wover-aligned")
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wcast-align -Wover-aligned")