diff --git a/sasl/Cargo.toml b/sasl/Cargo.toml
index f3b6349..c657247 100644
--- a/sasl/Cargo.toml
+++ b/sasl/Cargo.toml
@@ -15,8 +15,9 @@ edition = "2018"
 gitlab = { repository = "lumi/sasl-rs" }
 
 [features]
-default = ["scram"]
+default = ["scram", "anonymous"]
 scram = ["base64", "getrandom", "sha-1", "sha2", "hmac", "pbkdf2"]
+anonymous = ["getrandom"]
 
 [dependencies]
 base64 = { version = "0.13", optional = true }
diff --git a/sasl/src/client/mod.rs b/sasl/src/client/mod.rs
index 8bf078f..8acca9f 100644
--- a/sasl/src/client/mod.rs
+++ b/sasl/src/client/mod.rs
@@ -1,8 +1,12 @@
-use crate::common::scram::DeriveError;
-use crate::common::Credentials;
-use hmac::digest::InvalidLength;
 use std::fmt;
 
+use crate::common::Credentials;
+
+#[cfg(feature = "scram")]
+use crate::common::scram::DeriveError;
+#[cfg(feature = "scram")]
+use hmac::digest::InvalidLength;
+
 #[derive(Debug, PartialEq)]
 pub enum MechanismError {
     AnonymousRequiresNoCredentials,
@@ -18,7 +22,9 @@ pub enum MechanismError {
     NoServerNonce,
     NoServerSalt,
     NoServerIterations,
+    #[cfg(feature = "scram")]
     DeriveError(DeriveError),
+    #[cfg(feature = "scram")]
     InvalidKeyLength(InvalidLength),
     InvalidState,
 
@@ -27,12 +33,14 @@ pub enum MechanismError {
     NoSignatureInSuccessResponse,
 }
 
+#[cfg(feature = "scram")]
 impl From<DeriveError> for MechanismError {
     fn from(err: DeriveError) -> MechanismError {
         MechanismError::DeriveError(err)
     }
 }
 
+#[cfg(feature = "scram")]
 impl From<InvalidLength> for MechanismError {
     fn from(err: InvalidLength) -> MechanismError {
         MechanismError::InvalidKeyLength(err)
@@ -60,7 +68,9 @@ impl fmt::Display for MechanismError {
                 MechanismError::NoServerNonce => "no server nonce",
                 MechanismError::NoServerSalt => "no server salt",
                 MechanismError::NoServerIterations => "no server iterations",
+                #[cfg(feature = "scram")]
                 MechanismError::DeriveError(err) => return write!(fmt, "derive error: {}", err),
+                #[cfg(feature = "scram")]
                 MechanismError::InvalidKeyLength(err) =>
                     return write!(fmt, "invalid key length: {}", err),
                 MechanismError::InvalidState => "not in the right state to receive this response",
diff --git a/sasl/src/server/mechanisms/anonymous.rs b/sasl/src/server/mechanisms/anonymous.rs
index 1ee311b..5a5381e 100644
--- a/sasl/src/server/mechanisms/anonymous.rs
+++ b/sasl/src/server/mechanisms/anonymous.rs
@@ -1,5 +1,6 @@
 use crate::common::Identity;
 use crate::server::{Mechanism, MechanismError, Response};
+
 use getrandom::getrandom;
 
 pub struct Anonymous;
diff --git a/sasl/src/server/mechanisms/mod.rs b/sasl/src/server/mechanisms/mod.rs
index 9d4c9a5..1989a58 100644
--- a/sasl/src/server/mechanisms/mod.rs
+++ b/sasl/src/server/mechanisms/mod.rs
@@ -1,8 +1,10 @@
+#[cfg(feature = "anonymous")]
 mod anonymous;
 mod plain;
 #[cfg(feature = "scram")]
 mod scram;
 
+#[cfg(feature = "anonymous")]
 pub use self::anonymous::Anonymous;
 pub use self::plain::Plain;
 #[cfg(feature = "scram")]
diff --git a/sasl/src/server/mod.rs b/sasl/src/server/mod.rs
index 5ee233c..d3fcd7e 100644
--- a/sasl/src/server/mod.rs
+++ b/sasl/src/server/mod.rs
@@ -1,8 +1,10 @@
-use crate::common::scram::DeriveError;
 use crate::common::Identity;
 use crate::secret::Secret;
 use std::fmt;
 
+#[cfg(feature = "scram")]
+use crate::common::scram::DeriveError;
+
 #[macro_export]
 macro_rules! impl_validator_using_provider {
     ( $validator:ty, $secret:ty ) => {
@@ -33,6 +35,7 @@ pub trait Validator<S: Secret> {
 #[derive(Debug, PartialEq)]
 pub enum ProviderError {
     AuthenticationFailed,
+    #[cfg(feature = "scram")]
     DeriveError(DeriveError),
 }
 
@@ -61,7 +64,9 @@ pub enum MechanismError {
     ProviderError(ProviderError),
 
     CannotDecodeResponse,
+    #[cfg(feature = "scram")]
     InvalidKeyLength(hmac::digest::InvalidLength),
+    #[cfg(any(feature = "scram", feature = "anonymous"))]
     RandomFailure(getrandom::Error),
     NoProof,
     CannotDecodeProof,
@@ -69,6 +74,7 @@ pub enum MechanismError {
     SaslSessionAlreadyOver,
 }
 
+#[cfg(feature = "scram")]
 impl From<DeriveError> for ProviderError {
     fn from(err: DeriveError) -> ProviderError {
         ProviderError::DeriveError(err)
@@ -93,12 +99,14 @@ impl From<ValidatorError> for MechanismError {
     }
 }
 
+#[cfg(feature = "scram")]
 impl From<hmac::digest::InvalidLength> for MechanismError {
     fn from(err: hmac::digest::InvalidLength) -> MechanismError {
         MechanismError::InvalidKeyLength(err)
     }
 }
 
+#[cfg(any(feature = "scram", feature = "anonymous"))]
 impl From<getrandom::Error> for MechanismError {
     fn from(err: getrandom::Error) -> MechanismError {
         MechanismError::RandomFailure(err)
@@ -145,7 +153,9 @@ impl fmt::Display for MechanismError {
             MechanismError::ProviderError(err) => write!(fmt, "provider error: {}", err),
 
             MechanismError::CannotDecodeResponse => write!(fmt, "can’t decode response"),
+            #[cfg(feature = "scram")]
             MechanismError::InvalidKeyLength(err) => write!(fmt, "invalid key length: {}", err),
+            #[cfg(any(feature = "scram", feature = "anonymous"))]
             MechanismError::RandomFailure(err) => {
                 write!(fmt, "failure to get random data: {}", err)
             }