diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 53de4a22..9303e1e7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,7 +51,7 @@ jobs:
         KERNEL_MANIFEST: "test-kernel/Cargo.toml"
 
     - name: 'Convert Bootloader ELF to Binary'
-      run: cargo objcopy -- -I elf64-x86-64 -O binary --binary-architecture=i386:x86-64 target/x86_64-bootloader/release/bootloader target/x86_64-bootloader/release/bootloader.bin
+      run: rust-objcopy -I elf64-x86-64 -O binary --binary-architecture=i386:x86-64 target/x86_64-bootloader/release/bootloader target/x86_64-bootloader/release/bootloader.bin
 
      # install QEMU
     - name: Install QEMU (Linux)
diff --git a/Changelog.md b/Changelog.md
index 9cccee57..666a532f 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+- change `rustc-abi` in custom targets from `x86-softfloat` to `softfloat`, following [rust-lang/rust#157151](https://github.com/rust-lang/rust/pull/157151)
+
 # 0.9.34 – 2026-02-01
 
 This release is compatible with Rust nightlies starting with `nightly-2026-02-01`.
diff --git a/example-kernel/x86_64-example-kernel.json b/example-kernel/x86_64-example-kernel.json
index 4b172a61..4d247937 100644
--- a/example-kernel/x86_64-example-kernel.json
+++ b/example-kernel/x86_64-example-kernel.json
@@ -12,5 +12,5 @@
     "panic-strategy": "abort",
     "disable-redzone": true,
     "features": "-mmx,-sse,+soft-float",
-    "rustc-abi": "x86-softfloat"
+    "rustc-abi": "softfloat"
   }
diff --git a/test-kernel/x86_64-test-kernel.json b/test-kernel/x86_64-test-kernel.json
index 4b172a61..4d247937 100644
--- a/test-kernel/x86_64-test-kernel.json
+++ b/test-kernel/x86_64-test-kernel.json
@@ -12,5 +12,5 @@
     "panic-strategy": "abort",
     "disable-redzone": true,
     "features": "-mmx,-sse,+soft-float",
-    "rustc-abi": "x86-softfloat"
+    "rustc-abi": "softfloat"
   }
diff --git a/x86_64-bootloader.json b/x86_64-bootloader.json
index 8136047a..d8f3718a 100644
--- a/x86_64-bootloader.json
+++ b/x86_64-bootloader.json
@@ -19,5 +19,5 @@
     "panic-strategy": "abort",
     "executables": true,
     "relocation-model": "static",
-    "rustc-abi": "x86-softfloat"
+    "rustc-abi": "softfloat"
 }