diff --git a/Cargo.toml b/Cargo.toml
index 28371fef..16df2be9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ clippy-utilities = "0.1.0"
 enumflags2 = "0.7.3"
 errno = "0.2.7"
 futures = "0.3.17"
-hex-simd = "0.5.0"
+hex-simd = "0.8.0"
 lazy_static = "1.4.0"
 libc = "0.2.104"
 lockfree-cuckoohash = "0.1.0"
@@ -52,4 +52,4 @@ required-features = ["cm", "raw"]
 cancel_safety_test = [] # only used for cancel_safety test
 raw = [] # send/recv raw data
 cm = [] # connect cm server
-exp = [] # experimental methods
\ No newline at end of file
+exp = [] # experimental methods
diff --git a/src/device.rs b/src/device.rs
index 78748b7e..935397f0 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -187,10 +187,10 @@ fn guid_to_hex<R>(guid: Guid, case: hex_simd::AsciiCase, f: impl FnOnce(&str) ->
     let ans = {
         // SAFETY: uninit project
         let bytes = unsafe { slice::from_raw_parts_mut(buf.as_mut_ptr().cast(), 16) };
-        let dst = hex_simd::OutBuf::from_uninit_mut(bytes);
+        let dst = hex_simd::Out::from_uninit_slice(bytes);
         let result = hex_simd::encode_as_str(src, dst, case);
         // SAFETY: the encoding never fails
-        unsafe { result.unwrap_unchecked() }
+        result
     };
     f(ans)
 }