diff --git a/Cargo.lock b/Cargo.lock
index ae22518..64feb5e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -587,9 +587,9 @@ dependencies = [
 
 [[package]]
 name = "blake2"
-version = "0.10.2"
+version = "0.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b94ba84325db59637ffc528bbe8c7f86c02c57cff5c0e2b9b00f9a851f42f309"
+checksum = "b9cf849ee05b2ee5fba5e36f97ff8ec2533916700fc0758d40d92136a42f3388"
 dependencies = [
  "digest 0.10.3",
 ]
diff --git a/primitives/api/proc-macro/Cargo.toml b/primitives/api/proc-macro/Cargo.toml
index 0a57be8..8acc15d 100644
--- a/primitives/api/proc-macro/Cargo.toml
+++ b/primitives/api/proc-macro/Cargo.toml
@@ -19,7 +19,7 @@ proc-macro = true
 quote = "1.0.10"
 syn = { version = "1.0.98", features = ["full", "fold", "extra-traits", "visit"] }
 proc-macro2 = "1.0.37"
-blake2 = { version = "0.10.2", default-features = false }
+blake2 = { version = "0.10.4", default-features = false }
 proc-macro-crate = "1.1.3"
 
 # Required for the doc tests
diff --git a/primitives/core/hashing/Cargo.toml b/primitives/core/hashing/Cargo.toml
index d85e28d..9eafcf6 100644
--- a/primitives/core/hashing/Cargo.toml
+++ b/primitives/core/hashing/Cargo.toml
@@ -13,7 +13,7 @@ documentation = "https://docs.rs/sp-core-hashing"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-blake2 = { version = "0.10.2", default-features = false }
+blake2 = { version = "0.10.4", default-features = false }
 byteorder = { version = "1.3.2", default-features = false }
 digest = { version = "0.10.3", default-features = false }
 sha2 = { version = "0.10.2", default-features = false }