diff --git a/Cargo.lock b/Cargo.lock
index 02b326a..86401c7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -19,12 +19,12 @@ dependencies = [
 
 [[package]]
 name = "as-slice"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb4d1c23475b74e3672afa8c2be22040b8b7783ad9b461021144ed10a46bb0e6"
+checksum = "45403b49e3954a4b8428a0ac21a4b7afadccf92bfd96273f1a58cd4812496ae0"
 dependencies = [
- "generic-array 0.12.3",
- "generic-array 0.13.2",
+ "generic-array 0.12.4",
+ "generic-array 0.13.3",
  "generic-array 0.14.4",
  "stable_deref_trait",
 ]
@@ -165,14 +165,14 @@ dependencies = [
 
 [[package]]
 name = "cortex-m-rtic"
-version = "0.5.5"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b30efcb6b7920d9016182c485687f0012487032a14c415d2fce6e9862ef8260e"
+checksum = "fa43f63284b363ac64f9ce5221a0f593b54f73258aba8e1a88c1feed8efdb664"
 dependencies = [
  "cortex-m 0.6.7",
  "cortex-m-rt",
  "cortex-m-rtic-macros",
- "heapless",
+ "heapless 0.6.1",
  "rtic-core",
  "version_check",
 ]
@@ -253,7 +253,7 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ae46eb1b02de5a76d9d0ea21d657ff5b0ad2cc47f3a7723608227b1dd1b3eb18"
 dependencies = [
- "heapless",
+ "heapless 0.5.6",
  "nb 1.0.0",
  "no-std-net",
 ]
@@ -280,18 +280,18 @@ dependencies = [
 
 [[package]]
 name = "generic-array"
-version = "0.12.3"
+version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
+checksum = "ffdf9f34f1447443d37393cc6c2b8313aebddcd96906caf34e54c68d8e57d7bd"
 dependencies = [
  "typenum",
 ]
 
 [[package]]
 name = "generic-array"
-version = "0.13.2"
+version = "0.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ed1e761351b56f54eb9dcd0cfaca9fd0daecf93918e1cfc01c8a3d26ee7adcd"
+checksum = "f797e67af32588215eaaab8327027ee8e71b9dd0b2b26996aedf20c030fce309"
 dependencies = [
  "typenum",
 ]
@@ -339,12 +339,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "74911a68a1658cfcfb61bc0ccfbd536e3b6e906f8c2f7883ee50157e3e2184f1"
 dependencies = [
  "as-slice",
- "generic-array 0.13.2",
+ "generic-array 0.13.3",
  "hash32",
  "serde",
  "stable_deref_trait",
 ]
 
+[[package]]
+name = "heapless"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "634bd4d29cbf24424d0a4bfcbf80c6960129dc24424752a7d1d1390607023422"
+dependencies = [
+ "as-slice",
+ "generic-array 0.14.4",
+ "hash32",
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "indexmap"
 version = "1.6.1"
@@ -405,7 +417,7 @@ version = "0.1.0"
 source = "git+https://github.com/quartiq/miniconf.git?branch=develop#394d0634a9622e43a55850afc34eb4695ecababa"
 dependencies = [
  "derive_miniconf",
- "heapless",
+ "heapless 0.5.6",
  "minimq",
  "serde",
  "serde-json-core",
@@ -420,7 +432,7 @@ dependencies = [
  "embedded-nal",
  "enum-iterator",
  "generic-array 0.14.4",
- "heapless",
+ "heapless 0.5.6",
 ]
 
 [[package]]
@@ -667,7 +679,7 @@ name = "serde-json-core"
 version = "0.2.0"
 source = "git+https://github.com/rust-embedded-community/serde-json-core.git?branch=master#ee06ac91bc43b72450a92198a00d9e5c5b9946d2"
 dependencies = [
- "heapless",
+ "heapless 0.5.6",
  "serde",
 ]
 
@@ -700,7 +712,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e4e5aeb4818706fd74c35917692008d29a5314483c8180300a582253718ce57a"
 dependencies = [
  "embedded-nal",
- "heapless",
+ "heapless 0.5.6",
  "smoltcp",
 ]
 
@@ -718,7 +730,7 @@ dependencies = [
  "embedded-hal",
  "enum-iterator",
  "generic-array 0.14.4",
- "heapless",
+ "heapless 0.5.6",
  "log",
  "mcp23017",
  "miniconf",
diff --git a/Cargo.toml b/Cargo.toml
index fa6622c..8626359 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -35,7 +35,7 @@ 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"] }
-cortex-m-rtic = "0.5.5"
+cortex-m-rtic = "0.5.6"
 embedded-hal = "0.2.4"
 nb = "1.0.0"
 asm-delay = "0.9.0"