diff --git a/CHANGELOG.md b/CHANGELOG.md
index b57bbed5b2..1b72b86cfc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,11 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   `SockaddrIn6::from<std::net::SockaddrV6>`, `IpMembershipRequest::new`, and
   `Ipv6MembershipRequest::new` with future Rust versions.
   ([#2061](https://github.com/nix-rust/nix/pull/2061))
+- Fix potentially invalid conversions in
+  `SockaddrIn::from<std::net::SocketAddrV4>`,
+  `SockaddrIn6::from<std::net::SockaddrV6>`, `IpMembershipRequest::new`, and
+  `Ipv6MembershipRequest::new` with future Rust versions.
+  ([#2061](https://github.com/nix-rust/nix/pull/2061))
 
 ### Removed
 
diff --git a/Cargo.toml b/Cargo.toml
index 8b1d873186..acb03363bc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,6 @@ libc = { version = "0.2.137", features = [ "extra_traits" ] }
 bitflags = "1.1"
 cfg-if = "1.0"
 pin-utils = { version = "0.1.0", optional = true }
-static_assertions = "1"
 
 [target.'cfg(not(target_os = "redox"))'.dependencies]
 memoffset = { version = "0.7", optional = true }
diff --git a/src/sys/socket/addr.rs b/src/sys/socket/addr.rs
index 6f2e9eb31e..6ae657f493 100644
--- a/src/sys/socket/addr.rs
+++ b/src/sys/socket/addr.rs
@@ -41,21 +41,16 @@ use std::{fmt, mem, net, ptr, slice};
 /// Convert a std::net::Ipv4Addr into the libc form.
 #[cfg(feature = "net")]
 pub(crate) const fn ipv4addr_to_libc(addr: net::Ipv4Addr) -> libc::in_addr {
-    static_assertions::assert_eq_size!(net::Ipv4Addr, libc::in_addr);
-    // Safe because both types have the same memory layout, and no fancy Drop
-    // impls.
-    unsafe {
-        mem::transmute(addr)
+    libc::in_addr {
+        s_addr: u32::from_ne_bytes(addr.octets())
     }
 }
 
 /// Convert a std::net::Ipv6Addr into the libc form.
 #[cfg(feature = "net")]
 pub(crate) const fn ipv6addr_to_libc(addr: &net::Ipv6Addr) -> libc::in6_addr {
-    static_assertions::assert_eq_size!(net::Ipv6Addr, libc::in6_addr);
-    // Safe because both are Newtype wrappers around the same libc type
-    unsafe {
-        mem::transmute(*addr)
+    libc::in6_addr {
+        s6_addr: addr.octets()
     }
 }
 
@@ -1276,9 +1271,6 @@ impl SockaddrLike for () {
 }
 
 /// An IPv4 socket address
-// This is identical to net::SocketAddrV4.  But the standard library
-// doesn't allow direct access to the libc fields, which we need.  So we
-// reimplement it here.
 #[cfg(feature = "net")]
 #[repr(transparent)]
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]