diff --git a/Cargo.lock b/Cargo.lock
index 80c92829..c526e066 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -439,13 +439,11 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "blake2"
-version = "0.9.2"
+version = "0.10.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a4e37d16930f5459780f5621038b6382b9bb37c19016f39fb6b5808d831f174"
+checksum = "46502ad458c9a52b69d4d4d32775c788b7a1b85e8bc9d482d92250fc0e3f8efe"
 dependencies = [
- "crypto-mac 0.8.0",
- "digest 0.9.0",
- "opaque-debug",
+ "digest 0.10.6",
 ]
 
 [[package]]
@@ -696,16 +694,6 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "crypto-mac"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b584a330336237c1eecd3e94266efb216c56ed91225d634cb2991c5f3fd1aeab"
-dependencies = [
- "generic-array",
- "subtle",
-]
-
 [[package]]
 name = "crypto-mac"
 version = "0.11.1"
@@ -1541,7 +1529,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2a2a2320eb7ec0ebe8da8f744d7812d9fc4cb4d09344ac01898dbcb6a20ae69b"
 dependencies = [
- "crypto-mac 0.11.1",
+ "crypto-mac",
  "digest 0.9.0",
 ]
 
diff --git a/src/model/Cargo.toml b/src/model/Cargo.toml
index b47ec195..7c1e242a 100644
--- a/src/model/Cargo.toml
+++ b/src/model/Cargo.toml
@@ -22,7 +22,7 @@ garage_util = { version = "0.8.1", path = "../util" }
 
 async-trait = "0.1.7"
 arc-swap = "1.0"
-blake2 = "0.9"
+blake2 = "0.10"
 err-derive = "0.3"
 hex = "0.4"
 base64 = "0.21"
diff --git a/src/model/k2v/item_table.rs b/src/model/k2v/item_table.rs
index ce3e4129..9955a9cd 100644
--- a/src/model/k2v/item_table.rs
+++ b/src/model/k2v/item_table.rs
@@ -173,9 +173,9 @@ impl Crdt for DvvsEntry {
 
 impl PartitionKey for K2VItemPartition {
 	fn hash(&self) -> Hash {
-		use blake2::{Blake2b, Digest};
+		use blake2::{Blake2b512, Digest};
 
-		let mut hasher = Blake2b::new();
+		let mut hasher = Blake2b512::new();
 		hasher.update(self.bucket_id.as_slice());
 		hasher.update(self.partition_key.as_bytes());
 		let mut hash = [0u8; 32];
diff --git a/src/util/Cargo.toml b/src/util/Cargo.toml
index 5a36386d..cbda43c0 100644
--- a/src/util/Cargo.toml
+++ b/src/util/Cargo.toml
@@ -18,7 +18,7 @@ garage_db = { version = "0.8.1", path = "../db" }
 
 arc-swap = "1.0"
 async-trait = "0.1"
-blake2 = "0.9"
+blake2 = "0.10"
 bytes = "1.0"
 digest = "0.10"
 err-derive = "0.3"
diff --git a/src/util/data.rs b/src/util/data.rs
index 3f61e301..bdd8daee 100644
--- a/src/util/data.rs
+++ b/src/util/data.rs
@@ -115,9 +115,9 @@ pub fn sha256sum(data: &[u8]) -> Hash {
 
 /// Compute the blake2 of a slice
 pub fn blake2sum(data: &[u8]) -> Hash {
-	use blake2::{Blake2b, Digest};
+	use blake2::{Blake2b512, Digest};
 
-	let mut hasher = Blake2b::new();
+	let mut hasher = Blake2b512::new();
 	hasher.update(data);
 	let mut hash = [0u8; 32];
 	hash.copy_from_slice(&hasher.finalize()[..32]);