diff --git a/crates/wasi-common/cap-std-sync/Cargo.toml b/crates/wasi-common/cap-std-sync/Cargo.toml
index aa85bf9d55..46b2dd6976 100644
--- a/crates/wasi-common/cap-std-sync/Cargo.toml
+++ b/crates/wasi-common/cap-std-sync/Cargo.toml
@@ -13,7 +13,7 @@ include = ["src/**/*", "LICENSE" ]
 
 [dependencies]
 wasi-common = { path = "../", version = "0.26.0" }
-wiggle = { path = "../../wiggle", version = "0.26.0" }
+async_trait = "0.1"
 anyhow = "1.0"
 cap-std = "0.13.7"
 cap-fs-ext = "0.13.7"
diff --git a/crates/wasi-common/cap-std-sync/src/dir.rs b/crates/wasi-common/cap-std-sync/src/dir.rs
index c52f5d8e1b..de924e3c4e 100644
--- a/crates/wasi-common/cap-std-sync/src/dir.rs
+++ b/crates/wasi-common/cap-std-sync/src/dir.rs
@@ -106,7 +106,7 @@ impl Dir {
     }
 }
 
-#[wiggle::async_trait]
+#[async_trait::async_trait(?Send)]
 impl WasiDir for Dir {
     fn as_any(&self) -> &dyn Any {
         self
diff --git a/crates/wasi-common/cap-std-sync/src/file.rs b/crates/wasi-common/cap-std-sync/src/file.rs
index 751c5f21b1..0105d61583 100644
--- a/crates/wasi-common/cap-std-sync/src/file.rs
+++ b/crates/wasi-common/cap-std-sync/src/file.rs
@@ -20,7 +20,7 @@ impl File {
     }
 }
 
-#[wiggle::async_trait]
+#[async_trait::async_trait(?Send)]
 impl WasiFile for File {
     fn as_any(&self) -> &dyn Any {
         self
diff --git a/crates/wasi-common/cap-std-sync/src/sched/unix.rs b/crates/wasi-common/cap-std-sync/src/sched/unix.rs
index 94a8614a60..1c1227bd6a 100644
--- a/crates/wasi-common/cap-std-sync/src/sched/unix.rs
+++ b/crates/wasi-common/cap-std-sync/src/sched/unix.rs
@@ -20,7 +20,7 @@ impl SyncSched {
     }
 }
 
-#[wiggle::async_trait]
+#[async_trait::async_trait(?Send)]
 impl WasiSched for SyncSched {
     async fn poll_oneoff<'a>(&self, poll: &mut Poll<'a>) -> Result<(), Error> {
         if poll.is_empty() {
diff --git a/crates/wasi-common/cap-std-sync/src/sched/windows.rs b/crates/wasi-common/cap-std-sync/src/sched/windows.rs
index a98e558a7b..3d5fdd37ad 100644
--- a/crates/wasi-common/cap-std-sync/src/sched/windows.rs
+++ b/crates/wasi-common/cap-std-sync/src/sched/windows.rs
@@ -21,7 +21,7 @@ impl SyncSched {
     }
 }
 
-#[wiggle::async_trait]
+#[async_trait::async_trait(?Send)]
 impl WasiSched for SyncSched {
     async fn poll_oneoff<'a>(&self, poll: &mut Poll<'a>) -> Result<(), Error> {
         if poll.is_empty() {
diff --git a/crates/wasi-common/cap-std-sync/src/stdio.rs b/crates/wasi-common/cap-std-sync/src/stdio.rs
index d86d181399..c6afa8f9b4 100644
--- a/crates/wasi-common/cap-std-sync/src/stdio.rs
+++ b/crates/wasi-common/cap-std-sync/src/stdio.rs
@@ -22,7 +22,7 @@ pub fn stdin() -> Stdin {
     Stdin(std::io::stdin())
 }
 
-#[wiggle::async_trait]
+#[async_trait::async_trait(?Send)]
 impl WasiFile for Stdin {
     fn as_any(&self) -> &dyn Any {
         self
@@ -125,7 +125,7 @@ impl AsRawFd for Stdin {
 
 macro_rules! wasi_file_write_impl {
     ($ty:ty) => {
-        #[wiggle::async_trait]
+        #[async_trait::async_trait(?Send)]
         impl WasiFile for $ty {
             fn as_any(&self) -> &dyn Any {
                 self