diff --git a/Cargo.lock b/Cargo.lock
index dd6db78..ab22527 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -174,9 +174,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/oro-ser2mem-proc/Cargo.toml b/oro-ser2mem-proc/Cargo.toml
index 08485f4..9008bcd 100644
--- a/oro-ser2mem-proc/Cargo.toml
+++ b/oro-ser2mem-proc/Cargo.toml
@@ -13,6 +13,6 @@ test = false
 bench = false
 
 [dependencies]
-proc-macro2 = "1.0.56"
+proc-macro2 = "1.0.70"
 quote = "1.0.26"
 syn = { version = "2.0.15", features = ["full"] }