diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3c9c12f..45c37c2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,5 +13,5 @@ jobs:
     - uses: actions/checkout@v2
     - uses: WebAssembly/wit-abi-up-to-date@v17
       with:
-        wit-bindgen: '0.18.0'
+        wit-bindgen: '0.30.0'
         worlds: 'imports imports-request-reply messaging-core messaging-request-reply'
diff --git a/README.md b/README.md
index c6c61a7..83b6e55 100644
--- a/README.md
+++ b/README.md
@@ -87,4 +87,7 @@ wit-bindgen markdown ./wit/ -w imports --html-in-md
 wit-bindgen markdown ./wit/ -w imports-request-reply --html-in-md
 wit-bindgen markdown ./wit/ -w messaging-core --html-in-md
 wit-bindgen markdown ./wit/ -w messaging-request-reply --html-in-md
-```
\ No newline at end of file
+```
+
+It would make sense for a lot of these functions to be async, but that is not currently natively supported in
+the component model. Async support will be added as part of WASI Preview 3.
\ No newline at end of file