diff --git a/Cargo.lock b/Cargo.lock
index 8332d94..7769266 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -600,9 +600,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.80"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a56dea16b0a29e94408b9aa5e2940a4eedbd128a1ba20e8f7ae60fd3d465af0e"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/aoc-derive/Cargo.toml b/aoc-derive/Cargo.toml
index 67be8c9..0efec66 100644
--- a/aoc-derive/Cargo.toml
+++ b/aoc-derive/Cargo.toml
@@ -10,7 +10,7 @@ proc_macro = true
 
 [dependencies]
 proc-macro-error = "1.0.4"
-proc-macro2 = "1.0.80"
+proc-macro2 = "1.0.81"
 quote = "1.0.36"
 syn = { version = "2.0.59", features = ["full", "parsing"] }