diff --git a/Cargo.lock b/Cargo.lock
index 9cf61a4..373afdb 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -146,7 +146,7 @@ dependencies = [
  "serde-json-core 0.6.0",
  "serde_with",
  "serial-settings",
- "smlang 0.7.0",
+ "smlang 0.8.0",
  "smoltcp-nal",
  "stm32f4xx-hal",
  "tca9548",
@@ -1420,6 +1420,15 @@ dependencies = [
  "smlang-macros 0.7.0",
 ]
 
+[[package]]
+name = "smlang"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1de84f9f80bbe6272174e2bfdb8cf7ce4815b218038a42161c2f21c1d872c215"
+dependencies = [
+ "smlang-macros 0.8.0",
+]
+
 [[package]]
 name = "smlang-macros"
 version = "0.6.0"
@@ -1443,6 +1452,18 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "smlang-macros"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "231b4425dcc43afc7e18c34e7c6738cd252d42d91d909c948df14107c9ae79f1"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "string_morph",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "smoltcp"
 version = "0.11.0"
diff --git a/Cargo.toml b/Cargo.toml
index f63dbde..ef59d91 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -56,7 +56,7 @@ miniconf_mqtt = "0.13"
 # Note: Keep `py/pyproject.toml` version in sync with the Minimq version used in FW.
 minimq = "0.9.0"
 w5500 = "0.5"
-smlang= "0.7"
+smlang= "0.8"
 minireq = {git = "https://github.com/quartiq/minireq"}
 rtt-target = "0.5"
 enum-iterator = { version = "2.1", default-features = false }