diff --git a/CMakeLists.txt b/CMakeLists.txt
index c7f31e52f..62637e96f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -44,6 +44,15 @@ if (MSVC OR APPLE)
 	endif()
 endif()
 
+#emscripten pthread support
+if(EMSCRIPTEN)
+    set(EMSCRIPTEN_PTHREADS_COMPILER_FLAGS "-pthread -s USE_PTHREADS=1")
+    set(EMSCRIPTEN_PTHREADS_LINKER_FLAGS "${EMSCRIPTEN_PTHREADS_COMPILER_FLAGS} -s PROXY_TO_PTHREAD")
+    string(APPEND CMAKE_C_FLAGS " ${EMSCRIPTEN_PTHREADS_COMPILER_FLAGS}")
+    string(APPEND CMAKE_CXX_FLAGS " ${EMSCRIPTEN_PTHREADS_COMPILER_FLAGS}")
+    string(APPEND CMAKE_EXE_LINKER_FLAGS " ${EMSCRIPTEN_PTHREADS_LINKER_FLAGS}")
+endif()
+
 # Deterministic math
 # https://box2d.org/posts/2024/08/determinism/
 if (MINGW OR APPLE OR UNIX)