diff --git a/Cargo.lock b/Cargo.lock
index d7f48c17f8726..beef4b0848075 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1860,7 +1860,7 @@ dependencies = [
  "der",
  "elliptic-curve",
  "rfc6979",
- "signature",
+ "signature 1.6.4",
 ]
 
 [[package]]
@@ -1869,7 +1869,16 @@ version = "1.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "91cff35c70bba8a626e3185d8cd48cc11b5437e1a5bcd15b9b5fa3c64b6dfee7"
 dependencies = [
- "signature",
+ "signature 1.6.4",
+]
+
+[[package]]
+name = "ed25519"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cf420a7ec85d98495b0c34aa4a58ca117f982ffbece111aeb545160148d7010"
+dependencies = [
+ "signature 2.0.0",
 ]
 
 [[package]]
@@ -1879,7 +1888,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c762bae6dcaf24c4c84667b8579785430908723d5c889f469d76a41d59cc7a9d"
 dependencies = [
  "curve25519-dalek 3.2.0",
- "ed25519",
+ "ed25519 1.5.3",
  "rand 0.7.3",
  "serde",
  "sha2 0.9.9",
@@ -9524,6 +9533,12 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "signature"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fe458c98333f9c8152221191a77e2a44e8325d0193484af2e9421a53019e57d"
+
 [[package]]
 name = "simba"
 version = "0.8.0"
@@ -9993,7 +10008,7 @@ name = "sp-io"
 version = "7.0.0"
 dependencies = [
  "bytes",
- "ed25519",
+ "ed25519 2.1.0",
  "ed25519-dalek",
  "futures",
  "libsecp256k1",
@@ -12250,7 +12265,7 @@ dependencies = [
  "serde",
  "sha-1",
  "sha2 0.9.9",
- "signature",
+ "signature 1.6.4",
  "subtle",
  "thiserror",
  "tokio",
diff --git a/primitives/io/Cargo.toml b/primitives/io/Cargo.toml
index e56bfcf56041a..99b707d01b1a5 100644
--- a/primitives/io/Cargo.toml
+++ b/primitives/io/Cargo.toml
@@ -35,7 +35,7 @@ tracing-core = { version = "0.1.28", default-features = false}
 # Required for backwards compatibility reason, but only used for verifying when `UseDalekExt` is set.
 ed25519-dalek = { version = "1.0.1", default-features = false, optional = true }
 # Force the usage of ed25519, this is being used in `ed25519-dalek`.
-ed25519 = { version = "1.5.2", optional = true }
+ed25519 = { version = "2.1.0", optional = true }
 
 [features]
 default = ["std"]