diff --git a/parsers/Cargo.toml b/parsers/Cargo.toml
index 84aba37..d21efae 100644
--- a/parsers/Cargo.toml
+++ b/parsers/Cargo.toml
@@ -17,11 +17,11 @@ edition = "2018"
 minidom = "0.13"
 jid = { version = "0.9", features = ["minidom"] }
 base64 = "0.13"
-digest = "0.9"
-sha-1 = "0.9"
-sha2 = "0.9"
-sha3 = "0.9"
-blake2 = "0.9"
+digest = "0.10"
+sha-1 = "0.10"
+sha2 = "0.10"
+sha3 = "0.10"
+blake2 = "0.10"
 chrono = { version = "0.4.5", default-features = false, features = ["std"] }
 
 [features]
diff --git a/parsers/src/caps.rs b/parsers/src/caps.rs
index 24f129a..9d4d2b4 100644
--- a/parsers/src/caps.rs
+++ b/parsers/src/caps.rs
@@ -11,7 +11,7 @@ use crate::ns;
 use crate::presence::PresencePayload;
 use crate::util::error::Error;
 use crate::Element;
-use blake2::VarBlake2b;
+use blake2::Blake2bVar;
 use digest::{Digest, Update, VariableOutput};
 use sha1::Sha1;
 use sha2::{Sha256, Sha512};
@@ -187,17 +187,17 @@ pub fn hash_caps(data: &[u8], algo: Algo) -> Result<Hash, String> {
                 get_hash_vec(hash.as_slice())
             }
             Algo::Blake2b_256 => {
-                let mut hasher = VarBlake2b::new(32).unwrap();
+                let mut hasher = Blake2bVar::new(32).unwrap();
                 hasher.update(data);
-                let mut vec = Vec::with_capacity(32);
-                hasher.finalize_variable(|slice| vec.extend_from_slice(slice));
+                let mut vec = vec![0u8; 32];
+                hasher.finalize_variable(&mut vec).unwrap();
                 vec
             }
             Algo::Blake2b_512 => {
-                let mut hasher = VarBlake2b::new(64).unwrap();
+                let mut hasher = Blake2bVar::new(64).unwrap();
                 hasher.update(data);
-                let mut vec = Vec::with_capacity(64);
-                hasher.finalize_variable(|slice| vec.extend_from_slice(slice));
+                let mut vec = vec![0u8; 64];
+                hasher.finalize_variable(&mut vec).unwrap();
                 vec
             }
             Algo::Unknown(algo) => return Err(format!("Unknown algorithm: {}.", algo)),
diff --git a/parsers/src/ecaps2.rs b/parsers/src/ecaps2.rs
index 4ca1f2a..d5b6531 100644
--- a/parsers/src/ecaps2.rs
+++ b/parsers/src/ecaps2.rs
@@ -10,7 +10,7 @@ use crate::hashes::{Algo, Hash};
 use crate::ns;
 use crate::presence::PresencePayload;
 use crate::util::error::Error;
-use blake2::VarBlake2b;
+use blake2::Blake2bVar;
 use digest::{Digest, Update, VariableOutput};
 use sha2::{Sha256, Sha512};
 use sha3::{Sha3_256, Sha3_512};
@@ -146,17 +146,17 @@ pub fn hash_ecaps2(data: &[u8], algo: Algo) -> Result<Hash, Error> {
                 get_hash_vec(hash.as_slice())
             }
             Algo::Blake2b_256 => {
-                let mut hasher = VarBlake2b::new(32).unwrap();
+                let mut hasher = Blake2bVar::new(32).unwrap();
                 hasher.update(data);
-                let mut vec = Vec::with_capacity(32);
-                hasher.finalize_variable(|slice| vec.extend_from_slice(slice));
+                let mut vec = vec![0u8; 32];
+                hasher.finalize_variable(&mut vec).unwrap();
                 vec
             }
             Algo::Blake2b_512 => {
-                let mut hasher = VarBlake2b::new(64).unwrap();
+                let mut hasher = Blake2bVar::new(64).unwrap();
                 hasher.update(data);
-                let mut vec = Vec::with_capacity(64);
-                hasher.finalize_variable(|slice| vec.extend_from_slice(slice));
+                let mut vec = vec![0u8; 64];
+                hasher.finalize_variable(&mut vec).unwrap();
                 vec
             }
             Algo::Sha_1 => return Err(Error::ParseError("Disabled algorithm sha-1: unsafe.")),