diff --git a/Cargo.lock b/Cargo.lock
index 194dd369..7e40f5fc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2693,19 +2693,6 @@ dependencies = [
  "sp-trie",
 ]
 
-[[package]]
-name = "curve25519-dalek"
-version = "3.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b9fdf9972b2bd6af2d913799d9ebc165ea4d2e65878e329d9c6b372c4491b61"
-dependencies = [
- "byteorder",
- "digest 0.9.0",
- "rand_core 0.5.1",
- "subtle 2.4.1",
- "zeroize",
-]
-
 [[package]]
 name = "curve25519-dalek"
 version = "4.1.3"