diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 581b1b2a..5a23e60f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,8 +13,8 @@ jobs:
   all:
     strategy:
       matrix:
-        # 1.83 is an arbitrary minimum, tested to notice when it bumps
-        rust_version: [stable, nightly, 1.83]
+        # 1.85 is an arbitrary minimum, tested to notice when it bumps
+        rust_version: [stable, nightly, 1.85]
     runs-on: ubuntu-latest
     env:
       RUSTUP_TOOLCHAIN: ${{ matrix.rust_version }}
diff --git a/src/namelist.rs b/src/namelist.rs
index a793b246..c9bc90b4 100644
--- a/src/namelist.rs
+++ b/src/namelist.rs
@@ -24,7 +24,7 @@ use sshwire::{BinString, SSHDecode, SSHEncode, SSHSink, SSHSource, WireResult};
 
 /// Max count of LocalNames entries
 ///
-/// Current max is for kex, [mlkem, curve25519, curve25519@libssh, ext-info, strictkex, kexguess2]
+/// Current max is for kex: (mlkem, curve25519, curve25519@libssh, ext-info, strictkex, kexguess2)
 pub const MAX_LOCAL_NAMES: usize = 6;
 static EMPTY_LOCALNAMES: LocalNames = LocalNames::new();
 
diff --git a/src/sshwire.rs b/src/sshwire.rs
index bfd698ab..1733ee5d 100644
--- a/src/sshwire.rs
+++ b/src/sshwire.rs
@@ -486,6 +486,12 @@ impl SSHEncode for u32 {
     }
 }
 
+impl SSHEncode for u64 {
+    fn enc(&self, s: &mut dyn SSHSink) -> WireResult<()> {
+        s.push(&self.to_be_bytes())
+    }
+}
+
 // no length prefix
 impl SSHEncode for &[u8] {
     fn enc(&self, s: &mut dyn SSHSink) -> WireResult<()> {
@@ -555,6 +561,16 @@ impl<'de> SSHDecode<'de> for u32 {
     }
 }
 
+impl<'de> SSHDecode<'de> for u64 {
+    fn dec<S>(s: &mut S) -> WireResult<Self>
+    where
+        S: SSHSource<'de>,
+    {
+        let t = s.take(core::mem::size_of::<u64>())?;
+        Ok(u64::from_be_bytes(t.try_into().unwrap()))
+    }
+}
+
 /// Decodes a SSH name string. Must be ASCII
 /// without control characters. RFC4251 section 6.
 pub fn try_as_ascii(t: &[u8]) -> WireResult<&AsciiStr> {