diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b162eea5..9f31b165 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -297,6 +297,9 @@ if(ENABLE_ASIO_LIB)
   )
   if(WIN32)
     target_compile_definitions(nghttp2_asio PRIVATE NOMINMAX)
+    if(NOT ENABLE_STATIC_LIB)
+      set_target_properties(nghttp2_asio PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS TRUE)
+    endif()
   endif()
   target_link_libraries(nghttp2_asio
     ${NGHTTP2_TARGET}