diff --git a/Cargo.lock b/Cargo.lock
index f56d52d..129e311 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -341,7 +341,6 @@ dependencies = [
  "as-slice",
  "generic-array 0.13.3",
  "hash32",
- "serde",
  "stable_deref_trait",
 ]
 
@@ -354,6 +353,7 @@ dependencies = [
  "as-slice",
  "generic-array 0.14.4",
  "hash32",
+ "serde",
  "stable_deref_trait",
 ]
 
@@ -728,7 +728,7 @@ dependencies = [
  "embedded-hal",
  "enum-iterator",
  "generic-array 0.14.4",
- "heapless 0.5.6",
+ "heapless 0.6.1",
  "log",
  "mcp23017",
  "miniconf",
diff --git a/Cargo.toml b/Cargo.toml
index 79124dd..6b14532 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -34,7 +34,7 @@ cortex-m-log = { version = "0.7", features = ["log-integration"] }
 log = "0.4"
 panic-semihosting = { version = "0.5", optional = true }
 serde = { version = "1.0", features = ["derive"], default-features = false }
-heapless = { version = "0.5", features = ["serde"] }
+heapless = { version = "0.6", features = ["serde"] }
 cortex-m-rtic = "0.5.6"
 embedded-hal = "0.2.4"
 nb = "1.0.0"