diff --git a/.github/workflows/artifact.yaml b/.github/workflows/artifact.yaml
index 1f0384a0..bb668905 100644
--- a/.github/workflows/artifact.yaml
+++ b/.github/workflows/artifact.yaml
@@ -62,46 +62,47 @@ jobs:
       fail-fast: false
       matrix:
         python: [
-          { version: '3.12', abi: 'cp312-cp312' },
-          { version: '3.11', abi: 'cp311-cp311' },
-          { version: '3.10', abi: 'cp310-cp310' },
-          { version: '3.9', abi: 'cp39-cp39' },
-          { version: '3.8', abi: 'cp38-cp38' },
+          { version: '3.12' },
+          { version: '3.11' },
+          { version: '3.10' },
+          { version: '3.9' },
+          { version: '3.8' },
         ]
     env:
       CC: "clang"
-      CFLAGS: "-Os -fstrict-aliasing -flto=full"
-      LDFLAGS: "-fuse-ld=lld -Wl,--as-needed"
-      RUSTFLAGS: "-C linker=clang -C lto=fat -C link-arg=-fuse-ld=lld -Z mir-opt-level=4 -Z virtual-function-elimination -Z threads=4 -D warnings"
+      CFLAGS: "-Os -fstrict-aliasing -fno-plt -flto=full -emit-llvm"
+      LDFLAGS: "-fuse-ld=lld -Wl,-plugin-opt=also-emit-llvm -Wl,--as-needed -Wl,-zrelro,-znow"
+      RUSTFLAGS: "-C linker=clang -C link-arg=-fuse-ld=lld -C linker-plugin-lto -C lto=fat -C link-arg=-Wl,-zrelro,-znow -Z mir-opt-level=4 -Z virtual-function-elimination -Z threads=4 -D warnings"
       PATH: "/__w/orjson/orjson/.venv/bin:/github/home/.cargo/bin:/root/.local/bin:/root/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
     container:
       image: fedora:41
-      options: --user 0
     steps:
 
     - name: cpuinfo
       run: cat /proc/cpuinfo
 
+    - name: Build environment pre-clone
+      run: |
+        dnf install -y rustup clang lld python${{ matrix.python.version }} git
+        rustup-init --default-toolchain "${RUST_TOOLCHAIN}-x86_64-unknown-linux-gnu" --profile minimal --component rust-src -y
+
     - uses: actions/checkout@v4
 
-    - name: Build environment
+    - name: Build environment post-clone
       run: |
-        dnf install -y rustup clang lld python${{ matrix.python.version }}
-
-        rustup-init --default-toolchain "${RUST_TOOLCHAIN}-x86_64-unknown-linux-gnu" --profile minimal --component rust-src -y
         cargo fetch --target=x86_64-unknown-linux-gnu &
 
+        mkdir .cargo
+        cp ci/config.toml .cargo/config.toml
+
         curl -LsSf https://astral.sh/uv/install.sh | sh
         uv venv --python python${{ matrix.python.version }}
         uv pip install --upgrade "maturin>=1,<2" -r test/requirements.txt -r integration/requirements.txt
 
-        mkdir .cargo
-        cp ci/config.toml .cargo/config.toml
-
     - name: maturin
       run: |
         maturin build --release --strip \
-          --features=no-panic,unstable-simd,yyjson \
+          --features=avx512,no-panic,unstable-simd,yyjson \
           --compatibility manylinux_2_17 \
           --interpreter python${{ matrix.python.version }} \
           --target=x86_64-unknown-linux-gnu
diff --git a/Cargo.lock b/Cargo.lock
index e905fa75..75336eb1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -280,18 +280,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.199"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c9f6e76df036c77cd94996771fb40db98187f096dd0b9af39c6c6e452ba966a"
+checksum = "ddc6f9cc94d67c0e21aaf7eda3a010fd3af78ebf6e096aa6e2e13c79749cce4f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.199"
+version = "1.0.200"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "11bd257a6541e141e42ca6d24ae26f7714887b47e89aa739099104c7e4d3b7fc"
+checksum = "856f046b9400cee3c8c94ed572ecdb752444c24528c035cd35882aad6f492bcb"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/script/develop b/script/develop
index a4207166..f18bb24c 100755
--- a/script/develop
+++ b/script/develop
@@ -9,9 +9,9 @@ export LD="${LD:-lld}"
 
 echo "CC: ${CC}, LD: ${LD}, LD_LIBRARY_PATH: ${LD_LIBRARY_PATH}"
 
-export CFLAGS="-Os -fstrict-aliasing -fno-plt -flto=full"
-export LDFLAGS="-fuse-ld=${LD} -Wl,--as-needed"
-export RUSTFLAGS="-C linker=${CC} -C lto=fat -C link-arg=-fuse-ld=${LD} -Z mir-opt-level=4 -Z virtual-function-elimination -Z threads=8"
+export CFLAGS="-Os -fstrict-aliasing -fno-plt -flto=full -emit-llvm"
+export LDFLAGS="-fuse-ld=${LD} -Wl,-plugin-opt=also-emit-llvm -Wl,--as-needed -Wl,-zrelro,-znow"
+export RUSTFLAGS="-C linker=${CC} -C link-arg=-fuse-ld=${LD} -C linker-plugin-lto -C lto=fat -C link-arg=-Wl,-zrelro,-znow -Z mir-opt-level=4 -Z virtual-function-elimination -Z threads=8"
 
 maturin build "$@"