diff --git a/Cargo.lock b/Cargo.lock
index 22e5bcd..b7189b6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -306,9 +306,9 @@ checksum = "8aebca1129a03dc6dc2b127edd729435bbc4a37e1d5f4d7513165089ceb02634"
 
 [[package]]
 name = "crypto-mac"
-version = "0.10.0"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4857fd85a0c34b3c3297875b747c1e02e06b6a0ea32dd892d8192b9ce0813ea6"
+checksum = "25fab6889090c8133f3deb8f73ba3c65a7f456f66436fc012a1b1e272b1e103e"
 dependencies = [
  "generic-array",
  "subtle",
@@ -768,9 +768,9 @@ checksum = "644f9158b2f133fd50f5fb3242878846d9eb792e445c893805ff0e3824006e35"
 
 [[package]]
 name = "hmac"
-version = "0.10.1"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c1441c6b1e930e2817404b5046f1f989899143a12bf92de603b69f4e0aee1e15"
+checksum = "2a2a2320eb7ec0ebe8da8f744d7812d9fc4cb4d09344ac01898dbcb6a20ae69b"
 dependencies = [
  "crypto-mac",
  "digest",
@@ -1624,9 +1624,9 @@ checksum = "c5d65c4d95931acda4498f675e332fcbdc9a06705cd07086c510e9b6009cd1c1"
 
 [[package]]
 name = "pbkdf2"
-version = "0.7.3"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "309c95c5f738c85920eb7062a2de29f3840d4f96974453fc9ac1ba078da9c627"
+checksum = "d95f5254224e617595d2cc3cc73ff0a5eaf2637519e25f03388154e9378b6ffa"
 dependencies = [
  "crypto-mac",
  "hmac",
diff --git a/connect/Cargo.toml b/connect/Cargo.toml
index ebd71e6..96456b5 100644
--- a/connect/Cargo.toml
+++ b/connect/Cargo.toml
@@ -13,7 +13,7 @@ base64 = "0.13"
 form_urlencoded = "1.0"
 futures-core = "0.3"
 futures-util = { version = "0.3.5", default_features = false }
-hmac = "0.10"
+hmac = "0.11"
 hyper = { version = "0.14", features = ["server", "http1", "tcp"] }
 libmdns = "0.6"
 log = "0.4"
diff --git a/connect/src/discovery.rs b/connect/src/discovery.rs
index 383035c..7d559f0 100644
--- a/connect/src/discovery.rs
+++ b/connect/src/discovery.rs
@@ -102,18 +102,18 @@ impl Discovery {
         let base_key = &base_key[..16];
 
         let checksum_key = {
-            let mut h = HmacSha1::new_varkey(base_key).expect("HMAC can take key of any size");
+            let mut h = HmacSha1::new_from_slice(base_key).expect("HMAC can take key of any size");
             h.update(b"checksum");
             h.finalize().into_bytes()
         };
 
         let encryption_key = {
-            let mut h = HmacSha1::new_varkey(&base_key).expect("HMAC can take key of any size");
+            let mut h = HmacSha1::new_from_slice(&base_key).expect("HMAC can take key of any size");
             h.update(b"encryption");
             h.finalize().into_bytes()
         };
 
-        let mut h = HmacSha1::new_varkey(&checksum_key).expect("HMAC can take key of any size");
+        let mut h = HmacSha1::new_from_slice(&checksum_key).expect("HMAC can take key of any size");
         h.update(encrypted);
         if h.verify(cksum).is_err() {
             warn!("Login error for user {:?}: MAC mismatch", username);
diff --git a/core/Cargo.toml b/core/Cargo.toml
index 32bbc5f..7ac77de 100644
--- a/core/Cargo.toml
+++ b/core/Cargo.toml
@@ -20,7 +20,7 @@ bytes = "1.0"
 form_urlencoded = "1.0"
 futures-core = { version = "0.3", default-features = false }
 futures-util = { version = "0.3", default-features = false, features = ["alloc", "bilock", "unstable", "sink"] }
-hmac = "0.10"
+hmac = "0.11"
 httparse = "1.3"
 http = "0.2"
 hyper = { version = "0.14", optional = true, features = ["client", "tcp", "http1"] }
@@ -30,7 +30,7 @@ num-bigint = { version = "0.4", features = ["rand"] }
 num-integer = "0.1"
 num-traits = "0.2"
 once_cell = "1.5.2"
-pbkdf2 = { version = "0.7", default-features = false, features = ["hmac"] }
+pbkdf2 = { version = "0.8", default-features = false, features = ["hmac"] }
 priority-queue = "1.1"
 protobuf = "~2.14.0"
 rand = "0.8"
diff --git a/core/src/connection/handshake.rs b/core/src/connection/handshake.rs
index 6f802ab..a02832a 100644
--- a/core/src/connection/handshake.rs
+++ b/core/src/connection/handshake.rs
@@ -123,13 +123,14 @@ fn compute_keys(shared_secret: &[u8], packets: &[u8]) -> (Vec<u8>, Vec<u8>, Vec<
 
     let mut data = Vec::with_capacity(0x64);
     for i in 1..6 {
-        let mut mac = HmacSha1::new_varkey(&shared_secret).expect("HMAC can take key of any size");
+        let mut mac =
+            HmacSha1::new_from_slice(&shared_secret).expect("HMAC can take key of any size");
         mac.update(packets);
         mac.update(&[i]);
         data.extend_from_slice(&mac.finalize().into_bytes());
     }
 
-    let mut mac = HmacSha1::new_varkey(&data[..0x14]).expect("HMAC can take key of any size");
+    let mut mac = HmacSha1::new_from_slice(&data[..0x14]).expect("HMAC can take key of any size");
     mac.update(packets);
 
     (