diff --git a/Cargo.lock b/Cargo.lock
index 4e39445d2..5dbd53059 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1720,9 +1720,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.21.0"
+version = "1.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cde51589ab56b20a6f686b2c68f7a0bd6add753d697abf720d63f8db3ab7b1ad"
+checksum = "d75b0bedcc4fe52caa0e03d9f1151a323e4aa5e2d78ba3580400cd3c9e2bc4bc"
 
 [[package]]
 name = "opaque-debug"
diff --git a/actix-settings/Cargo.toml b/actix-settings/Cargo.toml
index b7556cc7a..e9ab8c34e 100644
--- a/actix-settings/Cargo.toml
+++ b/actix-settings/Cargo.toml
@@ -23,7 +23,7 @@ actix-http = "3"
 actix-service = "2"
 actix-web = { version = "4", default-features = false }
 derive_more = { version = "2", features = ["display", "error"] }
-once_cell = "1.13"
+once_cell = "1.21"
 openssl = { version = "0.10", features = ["v110"], optional = true }
 regex = "1.5"
 serde = { version = "1", features = ["derive"] }