diff --git a/CHANGELOG.md b/CHANGELOG.md
index b151c3d1..b055d4aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@ All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+# 0.6.1
+
+- ignore unknown vFile:open flags
+
 # 0.6.0
 
 After over a half-year of development, `gdbstub` 0.6 has finally been released!
diff --git a/src/protocol/commands/_vFile_open.rs b/src/protocol/commands/_vFile_open.rs
index 290772db..60bdf12c 100644
--- a/src/protocol/commands/_vFile_open.rs
+++ b/src/protocol/commands/_vFile_open.rs
@@ -20,8 +20,8 @@ impl<'a> ParseCommand<'a> for vFileOpen<'a> {
             [b':', body @ ..] => {
                 let mut body = body.splitn_mut_no_panic(3, |b| *b == b',');
                 let filename = decode_hex_buf(body.next()?).ok()?;
-                let flags = HostIoOpenFlags::from_bits(decode_hex(body.next()?).ok()?)?;
-                let mode = HostIoOpenMode::from_bits(decode_hex(body.next()?).ok()?)?;
+                let flags = HostIoOpenFlags::from_bits_truncate(decode_hex(body.next()?).ok()?);
+                let mode = HostIoOpenMode::from_bits_truncate(decode_hex(body.next()?).ok()?);
                 Some(vFileOpen { filename, flags, mode })
             },
             _ => None,