diff --git a/Cargo.lock b/Cargo.lock
index af7301d..8ecd652 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -454,9 +454,9 @@ dependencies = [
 
 [[package]]
 name = "k256"
-version = "0.13.3"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "956ff9b67e26e1a6a866cb758f12c6f8746208489e3e4a4b5580802f2f0a587b"
+checksum = "f6e3919bbaa2945715f0bb6d3934a173d1e9a59ac23767fbaaef277265a7411b"
 dependencies = [
  "cfg-if",
  "elliptic-curve",
diff --git a/dhkem/Cargo.toml b/dhkem/Cargo.toml
index fb4bd99..eb33af0 100644
--- a/dhkem/Cargo.toml
+++ b/dhkem/Cargo.toml
@@ -19,7 +19,7 @@ rand_core = "0.6.4"
 
 # optional dependencies
 elliptic-curve = { version = "0.13.8", optional = true, default-features = false }
-k256 = { version = "0.13.3", optional = true, default-features = false, features = ["arithmetic"] }
+k256 = { version = "0.13.4", optional = true, default-features = false, features = ["arithmetic"] }
 p256 = { version = "0.13.2", optional = true, default-features = false, features = ["arithmetic"] }
 p384 = { version = "0.13.0", optional = true, default-features = false, features = ["arithmetic"] }
 p521 = { version = "0.13.3", optional = true, default-features = false, features = ["arithmetic"] }