diff --git a/Cargo.lock b/Cargo.lock
index 0d8ba7a..9656511 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1259,9 +1259,9 @@ 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 = "openssl-probe"
diff --git a/Cargo.toml b/Cargo.toml
index 90670b4..4f4e179 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ serde_json = "1.0"
 walkdir = "2.5"
 anyhow = "1.0"
 jsonschema = "0.41"
-once_cell = "1.19"
+once_cell = "1.21"
 
 [[bin]]
 name = "bsv"