diff --git a/Cargo.lock b/Cargo.lock
index 9be1e88..226402a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -367,9 +367,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.19.0"
+version = "1.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "33ea5043e58958ee56f3e15a90aee535795cd7dfd319846288d93c5b57d85cbe"
 
 [[package]]
 name = "option-ext"
diff --git a/nix-script/Cargo.toml b/nix-script/Cargo.toml
index 84c5cfa..8a14612 100644
--- a/nix-script/Cargo.toml
+++ b/nix-script/Cargo.toml
@@ -12,7 +12,7 @@ fs2 = "0.4.3"
 lazy_static = "1.5.0"
 log = "0.4.22"
 nix-script-directives = { path = "../nix-script-directives" }
-once_cell = "1.19.0"
+once_cell = "1.20.0"
 path-absolutize = "3.1.1"
 seahash = "4.1.0"
 serde_json = "1.0.128"