diff --git a/docker/cargo-config.toml b/docker/cargo-config.toml
index dfb671bd..1ac0a631 100644
--- a/docker/cargo-config.toml
+++ b/docker/cargo-config.toml
@@ -3,8 +3,6 @@ linker = "clang"
 rustflags = [
     # faster linker
     "-C", "link-arg=-fuse-ld=/usr/local/bin/mold",
-    # potentially faster. https://github.com/aws/aws-graviton-getting-started/blob/main/rust.md
-    "-C", "target-feature=+lse",
     # potentially faster. https://nnethercote.github.io/perf-book/build-configuration.html
     "-C", "target-cpu=native",
     # tokio unstable is needed for tokio-console