diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2665f3b0..0ea26b8e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -64,8 +64,9 @@ jobs:
             target: aarch64-unknown-linux-gnu
           - rust: nightly
             target: aarch64-unknown-linux-gnu
-          - rust: nightly
-            target: aarch64_be-unknown-linux-gnu
+          # TODO: core_simd bug https://github.com/rust-lang/portable-simd/pull/348
+          # - rust: nightly
+          #   target: aarch64_be-unknown-linux-gnu
           - rust: stable
             target: arm-unknown-linux-gnueabi
           - rust: nightly
diff --git a/tools/build.sh b/tools/build.sh
index b9c50d69..5ff63120 100755
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -30,11 +30,13 @@ default_targets=(
     # rustc --print target-list | grep -E '^(aarch64|arm64)'
     aarch64-unknown-linux-gnu
     # aarch64 big endian
-    aarch64_be-unknown-linux-gnu
+    # TODO: core_simd bug https://github.com/rust-lang/portable-simd/pull/348
+    # aarch64_be-unknown-linux-gnu
     # aarch64 ILP32 ABI
     aarch64-unknown-linux-gnu_ilp32
     # aarch64 ILP32 ABI big endian
-    aarch64_be-unknown-linux-gnu_ilp32
+    # TODO: core_simd bug https://github.com/rust-lang/portable-simd/pull/348
+    # aarch64_be-unknown-linux-gnu_ilp32
     # aarch64 always support lse
     aarch64-apple-darwin