diff --git a/Cargo.lock b/Cargo.lock
index 5a50542..4e3f958 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -370,9 +370,9 @@ 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 = "openssl"
diff --git a/Cargo.toml b/Cargo.toml
index 57a1189..1dd91fe 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ getopts = "0.2.21"
 glob = "0.3"
 log = "0.4"
 mime_guess = "2.0"
-once_cell = "1.19"
+once_cell = "1.20"
 percent-encoding = "2.3"
 rcgen = { version = "0.13.1", default-features = false, features = ["ring"] }
 tokio-rustls = { version = "0.26.0", default-features = false, features = ["logging", "ring", "tls12"] }