diff --git a/library/stdarch/Cargo.lock b/library/stdarch/Cargo.lock
index cf6ce0d38e40c..7703c2a739d9c 100644
--- a/library/stdarch/Cargo.lock
+++ b/library/stdarch/Cargo.lock
@@ -773,9 +773,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with"
-version = "3.18.0"
+version = "3.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd5414fad8e6907dbdd5bc441a50ae8d6e26151a03b1de04d89a5576de61d01f"
+checksum = "76a5c54c7310e7b8b9577c286d7e399ddd876c3e12b3ed917a8aabc4b96e9e8c"
 dependencies = [
  "serde_core",
  "serde_with_macros",
@@ -783,9 +783,9 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "3.18.0"
+version = "3.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3db8978e608f1fe7357e211969fd9abdcae80bac1ba7a3369bb7eb6b404eb65"
+checksum = "84d57bc0c8b9a17920c178daa6bb924850d54a9c97ab45194bb8c17ad66bb660"
 dependencies = [
  "darling",
  "proc-macro2",