diff --git a/Cargo.toml b/Cargo.toml
index e2e3563..3276817 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,6 @@ rust-version = "1.89"
 
 [lib]
 name = "crc_fast"
-crate-type = ["lib", "cdylib", "staticlib"]
 bench = true
 
 [dependencies]
diff --git a/src/arch/x86_64/avx512.rs b/src/arch/x86_64/avx512.rs
index a95ff53..7add928 100644
--- a/src/arch/x86_64/avx512.rs
+++ b/src/arch/x86_64/avx512.rs
@@ -8,7 +8,7 @@
 
 use crate::arch::x86::sse::X86SsePclmulqdqOps;
 use crate::traits::ArchOps;
-use std::arch::x86_64::*;
+use core::arch::x86_64::*;
 
 /// x86_64-only AVX512+PCLMULQDQ tier - delegates to SSE tier and overrides XOR3 operations
 /// Uses AVX512 ternary logic for XOR3 operations with PCLMULQDQ