diff --git a/.travis.yml b/.travis.yml
index da4cd01db..9ee3205fc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ matrix:
   - rust: stable
   - rust: nightly
     env:
-    - FEATURES='asm,unstable'
+    - FEATURES='unstable'
 before_script: |
   export PATH="$PATH:$HOME/.cargo/bin"
   rustup component add rustfmt-preview
diff --git a/Cargo.toml b/Cargo.toml
index 9afbb6822..a89bd7864 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,12 +41,10 @@ codecov = { repository = "loomprotocol/silk", branch = "master", service = "gith
 [features]
 unstable = []
 ipv6 = []
-asm = ["sha2-asm"]
 
 [dependencies]
 rayon = "1.0.0"
 sha2 = "0.7.0"
-sha2-asm = {version="0.3", optional=true}
 generic-array = { version = "0.9.0", default-features = false, features = ["serde"] }
 serde = "1.0.27"
 serde_derive = "1.0.27"
diff --git a/README.md b/README.md
index cde984d1e..1e4869bcb 100644
--- a/README.md
+++ b/README.md
@@ -128,5 +128,5 @@ $ rustup install nightly
 Run the benchmarks:
 
 ```bash
-$ cargo +nightly bench --features="asm,unstable"
+$ cargo +nightly bench --features="unstable"
 ```
diff --git a/src/ledger.rs b/src/ledger.rs
index 21dfd7827..bb216ff30 100644
--- a/src/ledger.rs
+++ b/src/ledger.rs
@@ -70,13 +70,4 @@ mod bench {
             assert!(verify_slice(&events, &start_hash));
         });
     }
-
-    #[bench]
-    fn event_bench_seq(bencher: &mut Bencher) {
-        let start_hash = Default::default();
-        let events = next_ticks(&start_hash, 10_000, 8);
-        bencher.iter(|| {
-            assert!(verify_slice_seq(&events, &start_hash));
-        });
-    }
 }