diff --git a/Cargo.lock b/Cargo.lock
index f1b3900..20b1d73 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1005,9 +1005,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.21.3"
+version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
 [[package]]
 name = "once_cell_polyfill"
diff --git a/crates/protocol-squisher-performance/Cargo.toml b/crates/protocol-squisher-performance/Cargo.toml
index 4116dad..702b8bc 100644
--- a/crates/protocol-squisher-performance/Cargo.toml
+++ b/crates/protocol-squisher-performance/Cargo.toml
@@ -15,7 +15,7 @@ categories = ["development-tools", "encoding"]
 
 [dependencies]
 bytemuck = { version = "1.22", features = ["derive"] }
-once_cell = "1.20"
+once_cell = "1.21"
 protocol-squisher-ir = { path = "../protocol-squisher-ir" }
 rayon = "1.10"
 serde = { version = "1.0", features = ["derive"] }