diff --git a/Cargo.lock b/Cargo.lock
index 82d13a5..a5f973e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -359,9 +359,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.90"
+version = "2.0.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "919d3b74a5dd0ccd15aeb8f93e7006bd9e14c295087c9896a110f490752bcf31"
+checksum = "9c786062daee0d6db1132800e623df74274a0a87322d8e183338e01b3d98d058"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/pywr-v1-schema-macros/Cargo.toml b/pywr-v1-schema-macros/Cargo.toml
index ddc779a..ed8e677 100644
--- a/pywr-v1-schema-macros/Cargo.toml
+++ b/pywr-v1-schema-macros/Cargo.toml
@@ -14,7 +14,7 @@ path = "src/lib.rs"
 proc-macro = true
 
 [dependencies]
-syn = "2.0.90"
+syn = "2.0.93"
 quote = "1.0.37"