diff --git a/Cargo.lock b/Cargo.lock
index 43370060..fe0417e6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -371,9 +371,9 @@ checksum = "7fcaabb2fef8c910e7f4c7ce9f67a1283a1715879a7c230ca9d6d1ae31f16d91"
 
 [[package]]
 name = "elliptic-curve"
-version = "0.13.5"
+version = "0.13.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "968405c8fdc9b3bf4df0a6638858cc0b52462836ab6b1c87377785dd09cf1c0b"
+checksum = "d97ca172ae9dc9f9b779a6e3a65d308f2af74e5b8c921299075bdb4a0370e914"
 dependencies = [
  "base16ct",
  "base64ct",
@@ -391,6 +391,7 @@ dependencies = [
  "serde_json",
  "serdect",
  "subtle",
+ "tap",
  "zeroize",
 ]
 
diff --git a/bign256/Cargo.toml b/bign256/Cargo.toml
index 9657124c..0347e3a4 100644
--- a/bign256/Cargo.toml
+++ b/bign256/Cargo.toml
@@ -17,7 +17,7 @@ edition = "2021"
 rust-version = "1.65"
 
 [dependencies]
-elliptic-curve = { version = "0.13.5", features = ["hazmat", "sec1"] }
+elliptic-curve = { version = "0.13.6", features = ["hazmat", "sec1"] }
 
 # optional dependencies
 primeorder = { version = "0.13.1", optional = true, path = "../primeorder" }
diff --git a/p224/Cargo.toml b/p224/Cargo.toml
index f6b9aedc..78d7e794 100644
--- a/p224/Cargo.toml
+++ b/p224/Cargo.toml
@@ -16,7 +16,7 @@ edition = "2021"
 rust-version = "1.65"
 
 [dependencies]
-elliptic-curve = { version = "0.13.5", default-features = false, features = ["hazmat", "sec1"] }
+elliptic-curve = { version = "0.13.6", default-features = false, features = ["hazmat", "sec1"] }
 
 # optional dependencies
 ecdsa-core = { version = "0.16.6", package = "ecdsa", optional = true, default-features = false, features = ["der"] }
diff --git a/p256/Cargo.toml b/p256/Cargo.toml
index d520cacd..96ebd10c 100644
--- a/p256/Cargo.toml
+++ b/p256/Cargo.toml
@@ -17,7 +17,7 @@ edition = "2021"
 rust-version = "1.65"
 
 [dependencies]
-elliptic-curve = { version = "0.13.5", default-features = false, features = ["hazmat", "sec1"] }
+elliptic-curve = { version = "0.13.6", default-features = false, features = ["hazmat", "sec1"] }
 
 # optional dependencies
 ecdsa-core = { version = "0.16", package = "ecdsa", optional = true, default-features = false, features = ["der"] }