diff --git a/beacon_node/lighthouse_network/gossipsub/src/handler.rs b/beacon_node/lighthouse_network/gossipsub/src/handler.rs
index 359bf8da428..d89013eb2fd 100644
--- a/beacon_node/lighthouse_network/gossipsub/src/handler.rs
+++ b/beacon_node/lighthouse_network/gossipsub/src/handler.rs
@@ -520,6 +520,7 @@ impl ConnectionHandler for Handler {
                         ..
                     }) => match protocol {
                         Either::Left(protocol) => handler.on_fully_negotiated_inbound(protocol),
+                        #[allow(unreachable_patterns)]
                         Either::Right(v) => void::unreachable(v),
                     },
                     ConnectionEvent::FullyNegotiatedOutbound(fully_negotiated_outbound) => {
@@ -531,6 +532,9 @@ impl ConnectionHandler for Handler {
                     }) => {
                         tracing::debug!("Dial upgrade error: Protocol negotiation timeout");
                     }
+                    // This pattern is unreachable as of Rust 1.82, we can remove it once the
+                    // MSRV is increased past that version.
+                    #[allow(unreachable_patterns)]
                     ConnectionEvent::DialUpgradeError(DialUpgradeError {
                         error: StreamUpgradeError::Apply(e),
                         ..
diff --git a/beacon_node/lighthouse_network/src/service/mod.rs b/beacon_node/lighthouse_network/src/service/mod.rs
index a95912ff060..d97b52f79f1 100644
--- a/beacon_node/lighthouse_network/src/service/mod.rs
+++ b/beacon_node/lighthouse_network/src/service/mod.rs
@@ -1809,6 +1809,7 @@ impl<E: EthSpec> Network<E> {
                         self.inject_upnp_event(e);
                         None
                     }
+                    #[allow(unreachable_patterns)]
                     BehaviourEvent::ConnectionLimits(le) => void::unreachable(le),
                 },
                 SwarmEvent::ConnectionEstablished { .. } => None,
diff --git a/common/warp_utils/src/reject.rs b/common/warp_utils/src/reject.rs
index 9b28c65212c..bbd5274a7eb 100644
--- a/common/warp_utils/src/reject.rs
+++ b/common/warp_utils/src/reject.rs
@@ -265,6 +265,8 @@ pub async fn convert_rejection<T: Reply>(res: Result<T, warp::Rejection>) -> Res
         Ok(response) => response.into_response(),
         Err(e) => match handle_rejection(e).await {
             Ok(reply) => reply.into_response(),
+            // We can simplify this once Rust 1.82 is MSRV
+            #[allow(unreachable_patterns)]
             Err(_) => warp::reply::with_status(
                 warp::reply::json(&"unhandled error"),
                 eth2::StatusCode::INTERNAL_SERVER_ERROR,