diff --git a/Cargo.toml b/Cargo.toml
index 3ee3e59..981671f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ base64 = "0.13"
 chrono = { version = "0.4", features = ["serde"] }
 futures = "0.3"
 derive_more = "0.99"
-hmac = "0.10"
+hmac = "0.11"
 hyper = { version = "0.14", features = ["http1", "http2", "client", "stream"] }
 hyper-rustls = { version = "0.22", optional = true, default-features = false }
 hyper-tls = { version = "0.5", optional = true }
diff --git a/src/auth/raw.rs b/src/auth/raw.rs
index c95fce4..1078db6 100644
--- a/src/auth/raw.rs
+++ b/src/auth/raw.rs
@@ -306,7 +306,7 @@ impl OAuthParams {
         );
 
         // TODO check if key is correct length? Can this fail?
-        let mut digest = Hmac::<Sha1>::new_varkey(key.as_bytes()).expect("Wrong key length");
+        let mut digest = Hmac::<Sha1>::new_from_slice(key.as_bytes()).expect("Wrong key length");
         digest.update(base_str.as_bytes());
 
         let mut params: BTreeMap<&'static str, Cow<'static, str>> = BTreeMap::new();