diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 29464ce0..904fc465 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -45,8 +45,8 @@ jobs:
         uses: fabiocaccamo/create-matrix-action@v5
         with:
           matrix: |
-            os {linux},   cpu {amd64}, builder {ubuntu-22.04},     nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
-            os {linux},   cpu {arm64}, builder {ubuntu-22.04-arm}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            os {linux},   cpu {amd64}, builder {ubuntu-24.04},     nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
+            os {linux},   cpu {arm64}, builder {ubuntu-24.04-arm}, nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
             os {macos},   cpu {arm64}, builder {macos-14},         nim_version {${{ env.nim_version }}}, shell {bash --noprofile --norc -e -o pipefail}
             os {windows}, cpu {amd64}, builder {windows-latest},   nim_version {${{ env.nim_version }}}, shell {msys2}
 
@@ -104,9 +104,22 @@ jobs:
           echo "storage_binary=${storage_binary}" >>$GITHUB_ENV
           echo "c_bindings_lib=${c_bindings_lib}" >>$GITHUB_ENV
 
+      - name: Compute platform Nim flags
+        id: platform-nim-flags
+        shell: bash
+        run: |
+          platform_nim_flags=""
+          # secp256k1's x86_64 inline asm can hit a GCC register-allocation
+          # failure when -march=native expands against this runner's CPU, so
+          # pin a fixed baseline instead. arm64/macOS don't use that asm path.
+          if [[ "${{ matrix.os }}" == "linux" && "${{ matrix.cpu }}" == "amd64" ]]; then
+            platform_nim_flags="-d:disableMarchNative"
+          fi
+          echo "nim_flags=${platform_nim_flags}" >> "$GITHUB_OUTPUT"
+
       - name: Build Logos Storage binary
         run: |
-          make NIMFLAGS="--out:${{ env.build_dir }}/${{ env.storage_binary }} ${{ env.nim_flags }}"
+          make NIMFLAGS="${NIMFLAGS} --out:${{ env.build_dir }}/${{ env.storage_binary }} ${{ env.nim_flags }} ${{ steps.platform-nim-flags.outputs.nim_flags }}"
 
       - name: Package ${{ env.storage_binary_base }} Linux (compress and preserve perms)
         if: matrix.os == 'linux'
@@ -153,20 +166,20 @@ jobs:
         if: matrix.os == 'linux'
         run: |
           make -j${ncpu} update
-          make -j${ncpu} libstorage
+          make -j${ncpu} NIMFLAGS="${NIMFLAGS} ${{ steps.platform-nim-flags.outputs.nim_flags }}" libstorage
 
       - name: Build ${{ env.c_bindings_lib_base }} (MacOS)
         if: matrix.os == 'macos'
         run: |
           make -j${ncpu} update
-          STORAGE_LIB_PARAMS="--passL:\"-Wl,-install_name,@rpath/${{ env.c_bindings_lib_base }}.dylib\"" make -j${ncpu} libstorage
+          STORAGE_LIB_PARAMS="--passL:\"-Wl,-install_name,@rpath/${{ env.c_bindings_lib_base }}.dylib\"" make -j${ncpu} NIMFLAGS="${NIMFLAGS} ${{ steps.platform-nim-flags.outputs.nim_flags }}" libstorage
 
       - name: Build ${{ env.c_bindings_lib_base }} (Windows)
         if: matrix.os == 'windows'
         shell: msys2 {0}
         run: |
           make -j${ncpu} update
-          make -j${ncpu} libstorage
+          make -j${ncpu} NIMFLAGS="${NIMFLAGS} ${{ steps.platform-nim-flags.outputs.nim_flags }}" libstorage
 
       - name: Package ${{ env.c_bindings_lib_base }} Linux
         if: matrix.os == 'linux'