diff --git a/Cargo.lock b/Cargo.lock
index 631f5c0..670b510 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -40,12 +40,12 @@ dependencies = [
 
 [[package]]
 name = "heapless"
-version = "0.8.0"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
+checksum = "25ba4bd83f9415b58b4ed8dc5714c76e626a105be4646c02630ad730ad3b5aa4"
 dependencies = [
  "hash32",
- "serde",
+ "serde_core",
  "stable_deref_trait",
 ]
 
diff --git a/Cargo.toml b/Cargo.toml
index 2faac35..35cdea7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -17,7 +17,7 @@ serde.version = "1.0"
 serde.default-features = false
 serde.features = ["derive", "alloc"]
 
-heapless.version = "0.8.0"
+heapless.version = "0.9.3"
 heapless.default-features = false
 heapless.features = ["serde"]