diff --git a/algebraic/src/lib.rs b/algebraic/src/lib.rs
index 80b8d24a..a16fd6ef 100644
--- a/algebraic/src/lib.rs
+++ b/algebraic/src/lib.rs
@@ -1,6 +1,4 @@
 #![allow(clippy::unit_arg)]
-#![feature(stdsimd)]
-#![feature(const_trait_impl)]
 
 #[macro_use]
 extern crate serde;
diff --git a/starky/src/lib.rs b/starky/src/lib.rs
index 0c5d8fcd..b9d13604 100644
--- a/starky/src/lib.rs
+++ b/starky/src/lib.rs
@@ -1,7 +1,5 @@
 #![allow(clippy::needless_range_loop)]
 #![allow(dead_code)]
-#![feature(stdsimd)]
-#![feature(const_trait_impl)]
 
 pub mod polsarray;
 mod polutils;
diff --git a/test/stark_aggregation.sh b/test/stark_aggregation.sh
index 79220c26..a1226d00 100755
--- a/test/stark_aggregation.sh
+++ b/test/stark_aggregation.sh
@@ -1,10 +1,13 @@
 #!/bin/bash
 set -ex
 
-# ## build
-# cargo build --release
-## build with avx2 feature
-RUSTFLAGS="-C target-feature=+avx2" cargo build --release
+# build
+if [ "x${USE_AVX2}" = "xyes" ]; then
+    # build with avx2 feature
+    RUSTFLAGS="-C target-feature=+avx2" cargo build --release
+else
+    cargo build --release
+fi
 
 export NODE_OPTIONS="--max-old-space-size=81920"