diff --git a/Cargo.lock b/Cargo.lock
index be8d91d9..5c4902e7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1077,7 +1077,7 @@ dependencies = [
  "pin-project",
  "proxy-protocol",
  "realm_hook 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "realm_io 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "realm_io 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "realm_lb 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "realm_syscall 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio",
@@ -1103,7 +1103,7 @@ dependencies = [
 
 [[package]]
 name = "realm_io"
-version = "0.5.0"
+version = "0.5.1"
 dependencies = [
  "libc",
  "socket2",
@@ -1112,9 +1112,9 @@ dependencies = [
 
 [[package]]
 name = "realm_io"
-version = "0.5.0"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d3bfdfae2ed43b8010fb5da2f29e7a6b2d5e511a0ae0352a5660aa5caa65288"
+checksum = "2558ac548920bb63a08d21496481b24818501cb1a7bbd7c1c3b6d9bc5d1e4a41"
 dependencies = [
  "libc",
  "socket2",
diff --git a/realm_io/Cargo.toml b/realm_io/Cargo.toml
index 1f276a31..e5bd2cf4 100644
--- a/realm_io/Cargo.toml
+++ b/realm_io/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "realm_io"
-version = "0.5.0"
+version = "0.5.1"
 authors = ["zephyr <i@zephyr.moe>"]
 description = "Realm's high performance IO collections."
 repository = "https://github.com/zhboner/realm"
diff --git a/realm_io/src/linux/mmsg.rs b/realm_io/src/linux/mmsg.rs
index 42296fca..e7795bd1 100644
--- a/realm_io/src/linux/mmsg.rs
+++ b/realm_io/src/linux/mmsg.rs
@@ -183,8 +183,8 @@ mod store {
             } = self.store.msg_hdr;
             unsafe { MmsgRef {
                 addr: &*msg_name.cast(),
-                iovec: make_slice(msg_iov as *const _, msg_iovlen),
-                control: make_slice(msg_control as *const _, msg_controllen),
+                iovec: make_slice(msg_iov as *const _, msg_iovlen as _),
+                control: make_slice(msg_control as *const _, msg_controllen as _),
                 flags: &self.store.msg_hdr.msg_flags,
                 nbytes: self.store.msg_len,
                 _lifetime: PhantomData,
@@ -202,21 +202,21 @@ mod store {
         /// Set target address.
         pub const fn with_addr(mut self, addr: &'a SockAddrStore) -> Self {
             self.store.msg_hdr.msg_name = addr.0.as_ptr() as *mut _;
-            self.store.msg_hdr.msg_namelen = addr.0.len();
+            self.store.msg_hdr.msg_namelen = addr.0.len() as _;
             self
         }
 
         /// Set data to send.
         pub const fn with_iovec(mut self, iov: &'iov [IoSlice<'b>]) -> Self {
             self.store.msg_hdr.msg_iov = ptr::from_ref(iov) as *mut _;
-            self.store.msg_hdr.msg_iovlen = iov.len();
+            self.store.msg_hdr.msg_iovlen = iov.len() as _;
             self
         }
 
         /// Set control message to send.
         pub const fn with_control(mut self, ctrl: &'ctrl [u8]) -> Self {
             self.store.msg_hdr.msg_control = ptr::from_ref(ctrl) as *mut _;
-            self.store.msg_hdr.msg_controllen = ctrl.len();
+            self.store.msg_hdr.msg_controllen = ctrl.len() as _;
             self
         }
 
@@ -231,21 +231,21 @@ mod store {
         /// Set storage to accommodate peer address.
         pub fn with_addr(mut self, addr: &'a mut SockAddrStore) -> Self {
             self.store.msg_hdr.msg_name = addr.0.as_ptr() as *mut _;
-            self.store.msg_hdr.msg_namelen = addr.0.len();
+            self.store.msg_hdr.msg_namelen = addr.0.len() as _;
             self
         }
 
         /// Set storage to receive data.
         pub fn with_iovec(mut self, iov: &'iov mut [IoSliceMut<'b>]) -> Self {
             self.store.msg_hdr.msg_iov = ptr::from_mut(iov) as *mut _;
-            self.store.msg_hdr.msg_iovlen = iov.len();
+            self.store.msg_hdr.msg_iovlen = iov.len() as _;
             self
         }
 
         /// Set storage to receive control message.
         pub fn with_control(mut self, ctrl: &'ctrl mut [u8]) -> Self {
             self.store.msg_hdr.msg_control = ptr::from_mut(ctrl) as *mut _;
-            self.store.msg_hdr.msg_controllen = ctrl.len();
+            self.store.msg_hdr.msg_controllen = ctrl.len() as _;
             self
         }
 
@@ -259,8 +259,8 @@ mod store {
             } = self.store.msg_hdr;
             unsafe { MmsgMutRef {
                 addr: &mut *msg_name.cast(),
-                iovec: make_slice_mut(msg_iov as *mut _, msg_iovlen),
-                control: make_slice_mut(msg_control as *mut _, msg_controllen),
+                iovec: make_slice_mut(msg_iov as *mut _, msg_iovlen as _),
+                control: make_slice_mut(msg_control as *mut _, msg_controllen as _),
                 flags: &mut self.store.msg_hdr.msg_flags,
                 nbytes: self.store.msg_len,
                 _lifetime: PhantomData,