diff --git a/Cargo.lock b/Cargo.lock
index b736d048..f9bd834c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -174,9 +174,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.71"
+version = "1.0.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75cb1540fadbd5b8fbccc4dddad2734eba435053f725621c070711a14bb5f4b8"
+checksum = "2dd5e8a1f1029c43224ad5898e50140c2aebb1705f19e67c918ebf5b9e797fe1"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/oro-ser2mem-proc/Cargo.toml b/oro-ser2mem-proc/Cargo.toml
index d2509d14..8a7e1867 100644
--- a/oro-ser2mem-proc/Cargo.toml
+++ b/oro-ser2mem-proc/Cargo.toml
@@ -13,6 +13,6 @@ test = false
 bench = false
 
 [dependencies]
-proc-macro2 = "1.0.71"
+proc-macro2 = "1.0.73"
 quote = "1.0.26"
 syn = { version = "2.0.15", features = ["full"] }