diff --git a/Cargo.lock b/Cargo.lock
index 1c39394..e6e99be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -422,18 +422,18 @@ checksum = "8ed6a63f02c8539c91a8685a86f4099661ba3da017932f6ebbea6de3f0fa7c90"
 
 [[package]]
 name = "snafu"
-version = "0.8.9"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e84b3f4eacbf3a1ce05eac6763b4d629d60cbc94d632e4092c54ade71f1e1a2"
+checksum = "e45cb604038abb7b926b679887b3226d8d0f23874b66623625a0454be425a4b7"
 dependencies = [
  "snafu-derive",
 ]
 
 [[package]]
 name = "snafu-derive"
-version = "0.8.9"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1c97747dbf44bb1ca44a561ece23508e99cb592e862f22222dcf42f51d1e451"
+checksum = "287f59010008f0d7cf5e3b03196d666c1acc46c8d3e9cf34c28a1a7157601e72"
 dependencies = [
  "heck",
  "proc-macro2",
diff --git a/Cargo.toml b/Cargo.toml
index 7a9295a..14f9655 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ atmis = { version = "0.2.0", path = "crates/atmis" }
 # WHY: snafu is the fleet-wide error library per kanon RUST.md. Pinned at the
 # workspace root so the single heurema crate inherits via `workspace = true`,
 # matching the inheritance pattern adapter sub-crates will use later.
-snafu = "0.8"
+snafu = "0.9"
 
 # WHY: heurema's PersistenceBackend bound (crates/heurema/src/persistence.rs)
 # needs Serialize on save and DeserializeOwned on load, so heurema itself