diff --git a/Cargo.lock b/Cargo.lock
index b498d5f71..1c5ca52a9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -207,7 +207,7 @@ dependencies = [
 [[package]]
 name = "amcl"
 version = "0.3.0"
-source = "git+https://github.com/sigp/milagro_bls?tag=v1.4.0#45a076a776a6f1d9f8157fd2d574bfefaee2c81a"
+source = "git+https://github.com/sigp/milagro_bls?tag=v1.4.2#16655aa033175a90c10ef02aa144e2835de23aec"
 
 [[package]]
 name = "ansi_term"
@@ -3901,8 +3901,8 @@ dependencies = [
 
 [[package]]
 name = "milagro_bls"
-version = "1.4.0"
-source = "git+https://github.com/sigp/milagro_bls?tag=v1.4.0#45a076a776a6f1d9f8157fd2d574bfefaee2c81a"
+version = "1.4.2"
+source = "git+https://github.com/sigp/milagro_bls?tag=v1.4.2#16655aa033175a90c10ef02aa144e2835de23aec"
 dependencies = [
  "amcl",
  "hex",
diff --git a/crypto/bls/Cargo.toml b/crypto/bls/Cargo.toml
index 8222a0ccc..37d70eab7 100644
--- a/crypto/bls/Cargo.toml
+++ b/crypto/bls/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 [dependencies]
 eth2_ssz = "0.1.2"
 tree_hash = "0.1.1"
-milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v1.4.0", optional = true }
+milagro_bls = { git = "https://github.com/sigp/milagro_bls", tag = "v1.4.2", optional = true }
 rand = "0.7.3"
 serde = "1.0.116"
 serde_derive = "1.0.116"