diff --git a/actix-multipart-derive/CHANGES.md b/actix-multipart-derive/CHANGES.md
index caf75aeb3..8a78900ec 100644
--- a/actix-multipart-derive/CHANGES.md
+++ b/actix-multipart-derive/CHANGES.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- Update `syn` dependency to `2`.
 - Minimum supported Rust version (MSRV) is now 1.65 due to transitive `time` dependency.
 
 ## 0.6.0 - 2023-02-26
diff --git a/actix-multipart-derive/Cargo.toml b/actix-multipart-derive/Cargo.toml
index aca6de84a..41e687e50 100644
--- a/actix-multipart-derive/Cargo.toml
+++ b/actix-multipart-derive/Cargo.toml
@@ -17,11 +17,11 @@ all-features = true
 proc-macro = true
 
 [dependencies]
-darling = "0.14"
+darling = "0.20"
 parse-size = "1"
 proc-macro2 = "1"
 quote = "1"
-syn = "1"
+syn = "2"
 
 [dev-dependencies]
 actix-multipart = "0.6"
diff --git a/actix-web-codegen/src/route.rs b/actix-web-codegen/src/route.rs
index 108964a43..525a1c8ba 100644
--- a/actix-web-codegen/src/route.rs
+++ b/actix-web-codegen/src/route.rs
@@ -35,7 +35,7 @@ impl syn::parse::Parse for RouteArgs {
             });
         }
 
-        // separator
+        // advance past comma separator
         input.parse::<Token![,]>()?;
 
         // if next char is a literal, assume that it is a string and show multi-path error