diff --git a/Cargo.toml b/Cargo.toml
index ef5fa53..6a73d80 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,8 +32,8 @@ tiny-keccak = {version = "1.4.2", optional = true}
 blake2-rfc = {version = "0.2.18", optional = true}
 
 [features]
-default = ["multicore"]
-#default = ["multicore", "gm17", "sonic"]
+#default = ["multicore"]
+default = ["multicore", "gm17", "sonic"]
 #default = ["wasm"]
 multicore = ["futures-cpupool", "num_cpus", "crossbeam"]
 sonic = ["tiny-keccak", "blake2-rfc"]
diff --git a/src/sonic/tests/sonics.rs b/src/sonic/tests/sonics.rs
index 4bc0d7d..7464c89 100644
--- a/src/sonic/tests/sonics.rs
+++ b/src/sonic/tests/sonics.rs
@@ -543,7 +543,7 @@ fn test_high_level_sonic_api() {
 
 #[test]
 fn test_constraints_info() {
-    use pairing::bn256::{Bn256};
+    use crate::pairing::bn256::{Bn256};
     use std::time::{Instant};
     use crate::sonic::unhelped::padding::{constraints_info};
     {
@@ -572,9 +572,9 @@ fn test_constraints_info() {
 
 #[test]
 fn test_padding_using_mimc() {
-    use pairing::ff::{Field, PrimeField};
-    use pairing::{Engine, CurveAffine, CurveProjective};
-    use pairing::bls12_381::{Bls12, Fr};
+    use crate::pairing::ff::{Field, PrimeField};
+    use crate::pairing::{Engine, CurveAffine, CurveProjective};
+    use crate::pairing::bls12_381::{Bls12, Fr};
     use std::time::{Instant};
     use crate::sonic::srs::SRS;
 
diff --git a/src/sonic/unhelped/padding.rs b/src/sonic/unhelped/padding.rs
index 99229ff..99b471a 100644
--- a/src/sonic/unhelped/padding.rs
+++ b/src/sonic/unhelped/padding.rs
@@ -1,5 +1,5 @@
-use pairing::ff::{Field};
-use pairing::{Engine, CurveProjective};
+use crate::pairing::ff::{Field};
+use crate::pairing::{Engine, CurveProjective};
 use std::marker::PhantomData;
 
 use crate::sonic::cs::{Backend};
@@ -655,8 +655,8 @@ pub fn create_constraints_info<E: Engine, C: Circuit<E>, S: SynthesisDriver>(
 
 #[test]
 fn my_fun_circuit_test() {
-    use pairing::ff::PrimeField;
-    use pairing::bls12_381::{Bls12, Fr};
+    use crate::pairing::ff::PrimeField;
+    use crate::pairing::bls12_381::{Bls12, Fr};
 
     struct MyCircuit;
 
diff --git a/src/sonic/util.rs b/src/sonic/util.rs
index fefc4d6..45efc93 100644
--- a/src/sonic/util.rs
+++ b/src/sonic/util.rs
@@ -1048,8 +1048,8 @@ fn test_mut_distribute_powers() {
 
 #[test]
 fn test_trivial_parallel_kate_division() {
-    use pairing::ff::PrimeField;
-    use pairing::bls12_381::{Bls12, Fr};
+    use crate::pairing::ff::PrimeField;
+    use crate::pairing::bls12_381::{Bls12, Fr};
 
     let mut minus_one = Fr::one();
     minus_one.negate();
@@ -1072,8 +1072,8 @@ fn test_trivial_parallel_kate_division() {
 
 #[test]
 fn test_less_trivial_parallel_kate_division() {
-    use pairing::ff::PrimeField;
-    use pairing::bls12_381::{Bls12, Fr};
+    use crate::pairing::ff::PrimeField;
+    use crate::pairing::bls12_381::{Bls12, Fr};
 
     let z = Fr::one();
 
@@ -1113,8 +1113,8 @@ fn test_less_trivial_parallel_kate_division() {
 
 #[test]
 fn test_parallel_kate_division() {
-    use pairing::ff::PrimeField;
-    use pairing::bls12_381::{Bls12, Fr};
+    use crate::pairing::ff::PrimeField;
+    use crate::pairing::bls12_381::{Bls12, Fr};
 
     let mut poly = vec![
         Fr::from_str("328947234").unwrap(),