diff --git a/openmls/Cargo.toml b/openmls/Cargo.toml
index c0c3a9456d..23dcc80624 100644
--- a/openmls/Cargo.toml
+++ b/openmls/Cargo.toml
@@ -16,7 +16,7 @@ serde = { version = "^1.0", features = ["derive"] }
 serde_json = "^1.0"
 log = { version = "0.4", features = ["std"] }
 typetag = "0.1"
-tls_codec = { version = "0.2.0", features = ["derive", "serde_serialize"] }
+tls_codec = { version = "0.4.1", features = ["derive", "serde_serialize"] }
 # Only required for tests.
 rand = { version = "0.8", optional = true }
 # The js feature is required for wasm.