diff --git a/Cargo.toml b/Cargo.toml
index b61ca01..85d95ca 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "alkcall"
 version = "0.7.0"
 edition = "2021"
-rust-version = "1.85"
+rust-version = "1.88"
 license = "MIT OR Apache-2.0"
 description = "Call + channels RPC: structured JSON operations, streaming subscriptions, service discovery, and N-channel multiplexing over one transport stream"
 readme = "README.md"
diff --git a/src/channels/mux.rs b/src/channels/mux.rs
index 07c8716..5a022c9 100644
--- a/src/channels/mux.rs
+++ b/src/channels/mux.rs
@@ -151,18 +151,15 @@ impl MuxRunner {
                                     );
                                 }
                                 break;
-                            } else {
-                                if let Err(e) =
-                                    super::wire::write_chunk(&mut *writer, channel_id, &payload)
-                                        .await
-                                {
-                                    tracing::warn!(
-                                        channel_id,
-                                        error = %e,
-                                        "mux pump: failed to write chunk"
-                                    );
-                                    break;
-                                }
+                            } else if let Err(e) =
+                                super::wire::write_chunk(&mut *writer, channel_id, &payload).await
+                            {
+                                tracing::warn!(
+                                    channel_id,
+                                    error = %e,
+                                    "mux pump: failed to write chunk"
+                                );
+                                break;
                             }
                         }
                         None => {
diff --git a/src/core/types.rs b/src/core/types.rs
index 6bb18a3..d4632c3 100644
--- a/src/core/types.rs
+++ b/src/core/types.rs
@@ -749,7 +749,7 @@ mod tests {
     #[test]
     fn capabilities_debug_redacts_entries() {
         let caps = Capabilities::new().with_api_key("google", "sekrit".to_string());
-        let s = format!("{:?}", caps);
+        let s = format!("{caps:?}");
         assert!(s.contains("redacted"));
         assert!(!s.contains("sekrit"));
     }
@@ -757,7 +757,7 @@ mod tests {
     #[test]
     fn secret_debug_redacts() {
         let secret = Secret::new("hidden".to_string());
-        assert_eq!(format!("{:?}", secret), "[REDACTED]");
+        assert_eq!(format!("{secret:?}"), "[REDACTED]");
     }
 
     #[test]
diff --git a/src/registry/registration.rs b/src/registry/registration.rs
index 97580de..f964088 100644
--- a/src/registry/registration.rs
+++ b/src/registry/registration.rs
@@ -807,13 +807,13 @@ pub(crate) fn extract_json_pointer(input: &Value, path: &str) -> Option<String>
         return None;
     }
     let pointer = if let Some(rest) = trimmed.strip_prefix('/') {
-        format!("/{}", rest)
+        format!("/{rest}")
     } else {
         let dotted = trimmed.replace('.', "/");
         if let Some(rest) = dotted.strip_prefix('/') {
-            format!("/{}", rest)
+            format!("/{rest}")
         } else {
-            format!("/{}", dotted)
+            format!("/{dotted}")
         }
     };
     input