diff --git a/Cargo.toml b/Cargo.toml
index f6630982..8d01d585 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ core = { version = "1.0", optional = true, package = "rustc-std-workspace-core"
 libc = { version = "0.2.120", default-features = false }
 
 [target.'cfg(target_os = "wasi")'.dependencies]
-wasi = "0.10"
+wasi = "0.11"
 
 [target.'cfg(all(target_arch = "wasm32", target_os = "unknown"))'.dependencies]
 wasm-bindgen = { version = "0.2.62", default-features = false, optional = true }
diff --git a/src/error.rs b/src/error.rs
index 66157537..b5ab2bb1 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -109,10 +109,6 @@ cfg_if! {
             let idx = buf.iter().position(|&b| b == 0).unwrap_or(n);
             core::str::from_utf8(&buf[..idx]).ok()
         }
-    } else if #[cfg(target_os = "wasi")] {
-        fn os_err(errno: i32, _buf: &mut [u8]) -> Option<wasi::Error> {
-            wasi::Error::from_raw_error(errno as _)
-        }
     } else {
         fn os_err(_errno: i32, _buf: &mut [u8]) -> Option<&str> {
             None
diff --git a/src/wasi.rs b/src/wasi.rs
index 2d413e02..c5121824 100644
--- a/src/wasi.rs
+++ b/src/wasi.rs
@@ -9,15 +9,11 @@
 //! Implementation for WASI
 use crate::Error;
 use core::num::NonZeroU32;
-use wasi::random_get;
+use wasi::wasi_snapshot_preview1::random_get;
 
 pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
-    unsafe {
-        random_get(dest.as_mut_ptr(), dest.len()).map_err(|e: wasi::Error| {
-            // convert wasi's Error into getrandom's NonZeroU32 error
-            // SAFETY: `wasi::Error` is `NonZeroU16` internally, so `e.raw_error()`
-            // will never return 0
-            NonZeroU32::new_unchecked(e.raw_error() as u32).into()
-        })
+    match unsafe { random_get(dest.as_mut_ptr() as i32, dest.len() as i32) } {
+        0 => Ok(()),
+        err => Err(unsafe { NonZeroU32::new_unchecked(err as u32) }.into()),
     }
 }