diff --git a/CMakeLists.txt b/CMakeLists.txt
index af1836a..1029ba5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -201,6 +201,7 @@ if(SLED_BUILD_TESTS)
   sled_add_test(NAME sled_event_bus_test SRCS
                 src/sled/event_bus/event_bus_test.cc)
   sled_add_test(NAME sled_lua_test SRCS tests/lua_test.cc)
+  sled_add_test(NAME sled_asio_test SRCS tests/asio_test.cc)
   sled_add_test(NAME sled_move_on_copy_test SRCS
                 src/sled/utility/move_on_copy_test.cc)
   sled_add_test(NAME sled_symbolize_test SRCS
diff --git a/src/sled/sled.h b/src/sled/sled.h
index 0133e7e..b891f9c 100644
--- a/src/sled/sled.h
+++ b/src/sled/sled.h
@@ -3,6 +3,7 @@
 #define SLED_SLED_H
 
 // thrid_party
+#include <asio.hpp>
 #include "rx.h"
 #include "sled/nonstd/cxxopts.h"
 #include "sled/nonstd/expected.h"
diff --git a/tests/asio_test.cc b/tests/asio_test.cc
new file mode 100644
index 0000000..747fbf7
--- /dev/null
+++ b/tests/asio_test.cc
@@ -0,0 +1,39 @@
+#include <sled/sled.h>
+
+TEST_SUITE("asio") {
+    TEST_CASE("io_context") {
+        asio::io_context ctx;
+        int x = 0;
+        asio::dispatch(ctx, [&]{
+                CHECK_EQ(x, 0);
+                ++x;
+        });
+        asio::post(ctx, [&]{
+                CHECK_EQ(x, 1);
+                ++x;
+                asio::dispatch(ctx, [&]{
+                        CHECK_EQ(x, 2);
+                        ++x;
+                });
+                CHECK_EQ(x, 3);
+                ++x;
+        });
+
+        asio::steady_timer timer(ctx, std::chrono::milliseconds(500));
+        timer.async_wait([&](const asio::error_code& ec){
+                if (ec.value() == asio::error::operation_aborted) {
+                    return;
+                }
+                CHECK_EQ(x, 4);
+                ++x;
+        });
+
+        // start ctx
+        {
+            CHECK_EQ(x, 0);
+            ctx.run();
+            CHECK_EQ(x, 5);
+        }
+
+    }
+}