diff --git a/Cargo.lock b/Cargo.lock
index 4236b648..29d07a77 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -310,9 +310,12 @@ checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
 
 [[package]]
 name = "once_cell"
-version = "1.19.0"
+version = "1.20.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "82881c4be219ab5faaf2ad5e5e5ecdff8c66bd7402ca3160975c93b24961afd1"
+dependencies = [
+ "portable-atomic",
+]
 
 [[package]]
 name = "paste"
@@ -326,6 +329,12 @@ version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
+[[package]]
+name = "portable-atomic"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc9c68a3f6da06753e9335d63e27f6b9754dd1920d941135b7ea8224f141adb2"
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
diff --git a/Cargo.toml b/Cargo.toml
index d21b7526..9bdc3841 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -89,7 +89,7 @@ untrusted = "0.9"
 base64 = "0.22"
 bencher = "0.1.5"
 bzip2 = "0.4.4"
-once_cell = "1.17.2"
+once_cell = "1.20.1"
 rcgen = { version = "0.13", default-features = false, features = ["aws_lc_rs"] }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"