diff --git a/Cargo.lock b/Cargo.lock
index 933214d5..36872897 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1541,9 +1541,9 @@ checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "coset"
-version = "0.3.8"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f4c8cc80f631f8307b887faca24dcc3abc427cd0367f6eb6188f6e8f5b7ad8fb"
+checksum = "844c9268d02cc99addebeb0dd6703508d6f0cc09ff86dda3f1350b4bccfbc00e"
 dependencies = [
  "ciborium",
  "ciborium-io",
@@ -3155,7 +3155,7 @@ dependencies = [
  "metrics",
  "metrics-util 0.20.1",
  "quanta",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
@@ -4459,7 +4459,7 @@ checksum = "5e1aee7486406df3541b5a657204a11be97175a467d77bc98e6d94a66289fb80"
 dependencies = [
  "arraydeque",
  "smallvec 2.0.0-alpha.12",
- "thiserror 2.0.17",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 308147b7..2f494b57 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -84,7 +84,7 @@ rsa = { version = "0.9", features = ["sha2"] }
 
 # CBOR/COSE serialization
 ciborium = "0.2"
-coset = "0.3"
+coset = "0.4"
 serde_bytes = "0.11"
 
 # TOML configuration