diff --git a/windows/CMakeLists.txt b/windows/CMakeLists.txt
index 2667668..4f40850 100644
--- a/windows/CMakeLists.txt
+++ b/windows/CMakeLists.txt
@@ -32,6 +32,11 @@ set(CMAKE_CXX_FLAGS_PROFILE "${CMAKE_CXX_FLAGS_RELEASE}")
 # Use Unicode for all projects.
 add_definitions(-DUNICODE -D_UNICODE)
 
+# Newer MSVC toolchains (VS 2022 17.13+/VS 18) turn the deprecated
+# <experimental/coroutine> header used by flutter_inappwebview_windows into a
+# hard error (STL1011). Suppress it project-wide so plugins keep building.
+add_compile_definitions(_SILENCE_EXPERIMENTAL_COROUTINE_DEPRECATION_WARNINGS)
+
 # Compilation settings that should be applied to most targets.
 #
 # Be cautious about adding new options here, as plugins use this function by