diff --git a/Cargo.lock b/Cargo.lock
index 4791e01c..07a33c70 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1967,9 +1967,9 @@ checksum = "dea2df4cf52843e0452895c455a1a2cfbb842a1e7329671acf418fdc53ed4c59"
 
 [[package]]
 name = "etherparse"
-version = "0.19.0"
+version = "0.21.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b119b9796ff800751a220394b8b3613f26dd30c48f254f6837e64c464872d1c7"
+checksum = "17304d06addb3283cdc4bd528e42dd95e73c8ee2d6492ffce415e93660885449"
 dependencies = [
  "arrayvec",
 ]
diff --git a/wallguard/Cargo.toml b/wallguard/Cargo.toml
index 02fc788f..685e1418 100644
--- a/wallguard/Cargo.toml
+++ b/wallguard/Cargo.toml
@@ -17,7 +17,7 @@ libc = "0.2.180"
 chrono = "0.4.41"
 once_cell = "1.21.4"
 nullnet-traffic-monitor = "0.1.6"
-etherparse = "0.19.0"
+etherparse = "0.21.0"
 sysinfo = { version = "0.37.2", default-features = false, features = ["disk", "system", "component"] }
 async-channel = "2.3.1"
 wallguard-common = { path = "../wallguard-common" }