diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 9cfba59..bf7648e 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -92,6 +92,14 @@ jobs:
             skip: "*musllinux*"
             arch: "x86_64"
 
+          # Native arm64 runner rather than QEMU on an x86_64 one: nothing is compiled here
+          # -- the wheel just repackages an upstream archive -- so emulation would buy
+          # nothing and cost a lot. musllinux is skipped for the same reason as above: the
+          # dcmqi binaries are linked against glibc.
+          - os: ubuntu-24.04-arm
+            skip: "*musllinux*"
+            arch: "aarch64"
+
           # cibuildwheel's "auto" on Windows means AMD64 *and* x86, but dcmqi publishes no
           # 32-bit binaries. The win32 wheel it produced could therefore only ever contain
           # the 64-bit ones, so the architecture is pinned rather than probed.
@@ -122,6 +130,11 @@ jobs:
           CIBW_ARCHS: "${{ matrix.arch }}"
           CIBW_SKIP: ${{ matrix.skip }}
           CIBW_ENVIRONMENT_MACOS: "MACOSX_DEPLOYMENT_TARGET=13.0"
+          # dcmqi builds its arm64 Linux package in manylinux_2_28_aarch64, and its binaries
+          # need glibc 2.28. Repairing them against an older image would fail rather than
+          # mistag, but pinning keeps the wheel's floor tied to how the binaries were built
+          # instead of to whatever cibuildwheel currently defaults to.
+          CIBW_MANYLINUX_AARCH64_IMAGE: "manylinux_2_28"
 
       - name: Upload wheels
         uses: actions/upload-artifact@v7
diff --git a/.github/workflows/update-dcmqi.yml b/.github/workflows/update-dcmqi.yml
index 4d1058b..fa63545 100644
--- a/.github/workflows/update-dcmqi.yml
+++ b/.github/workflows/update-dcmqi.yml
@@ -76,11 +76,15 @@ jobs:
             exit 1
           fi
 
-          # Determine macOS asset pattern
+          # Which optional assets does this release publish? Both are probed rather than
+          # assumed, so this workflow keeps working against older releases: the macOS split
+          # into per-architecture archives arrived in dcmqi v1.5.1, arm64 Linux in v1.5.7.
           has_mac_split=false
+          has_linux_arm64=false
           for asset in $assets; do
             case "$asset" in
               *-mac-arm64*) has_mac_split=true ;;
+              *-linux-arm64*) has_linux_arm64=true ;;
             esac
           done
 
@@ -104,6 +108,13 @@ jobs:
             echo "set(linux_sha256          \"${checksums[$linux_file]}\")"
             echo ''
 
+            if [ "$has_linux_arm64" = true ]; then
+              linux_arm64_file="dcmqi-${latest_version}-linux-arm64.tar.gz"
+              echo "set(linux_arm64_filename  \"$linux_arm64_file\")"
+              echo "set(linux_arm64_sha256    \"${checksums[$linux_arm64_file]}\")"
+              echo ''
+            fi
+
             # macOS
             if [ "$has_mac_split" = true ]; then
               mac_arm64_file="dcmqi-${latest_version}-mac-arm64.tar.gz"
diff --git a/README.md b/README.md
index b9c808a..64f6d1f 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ configuration defined in the `pyproject.toml` file.
 ## Packaged dcmqi version
 
 This package wraps the official
-[dcmqi v1.5.6](https://github.com/QIICR/dcmqi/releases/tag/v1.5.6) release.
+[dcmqi v1.5.7](https://github.com/QIICR/dcmqi/releases/tag/v1.5.7) release.
 
 ## Platforms
 
@@ -41,6 +41,7 @@ The following platforms are supported by the binary wheels:
 | OS          | Arch             |
 | ----------- | ---------------- |
 | Linux Intel | manylinux 64-bit |
+| Linux Arm   | manylinux arm64  |
 | macOS 13+   | Apple Silicon    |
 | macOS 15+   | Intel            |
 | Windows     | 64-bit           |
diff --git a/dcmqiUrls.cmake b/dcmqiUrls.cmake
index 506df90..3a4f997 100644
--- a/dcmqiUrls.cmake
+++ b/dcmqiUrls.cmake
@@ -3,16 +3,19 @@
 # Generated by .github/workflows/update-dcmqi.yml -- do not edit by hand.
 # Which of these assets a build uses is decided in dcmqiArchive.cmake.
 
-set(version "1.5.6")
+set(version "1.5.7")
 
-set(linux_filename        "dcmqi-1.5.6-linux.tar.gz")
-set(linux_sha256          "eb2743e5c24dec38aafe06612b18d200516f39b8f0d62592a926ca6e8cfb5187")
+set(linux_filename        "dcmqi-1.5.7-linux.tar.gz")
+set(linux_sha256          "7c4f525a122ae5782b1cf7730d8deb9f7d43e218af13104377b615adbced2ddd")
 
-set(macos_arm64_filename  "dcmqi-1.5.6-mac-arm64.tar.gz")
-set(macos_arm64_sha256    "20965b3afcd1d2a878fd3e09e3ee44de655e350d6fe43f9663c93348610f662e")
+set(linux_arm64_filename  "dcmqi-1.5.7-linux-arm64.tar.gz")
+set(linux_arm64_sha256    "dcc605e05eafd6fc92981a16f5ca755f10b1ccceaad0cb2f4343930054ebe3ad")
 
-set(macos_x86_64_filename "dcmqi-1.5.6-mac-x86_64.tar.gz")
-set(macos_x86_64_sha256   "6678f2a60547c3a14a9f0376932217c3faee28158b6805c3b89d303df0640747")
+set(macos_arm64_filename  "dcmqi-1.5.7-mac-arm64.tar.gz")
+set(macos_arm64_sha256    "ec17425d3eaa7b58db0924138569508c833e9774ef48052ca85d3e5a1b6cf9b9")
 
-set(win64_filename        "dcmqi-1.5.6-win64.zip")
-set(win64_sha256          "72f4bf6bc6b265e5843c42436267fb59a8079ca765095f218300d019f9e15e3d")
+set(macos_x86_64_filename "dcmqi-1.5.7-mac-x86_64.tar.gz")
+set(macos_x86_64_sha256   "3d9b88d3e628c3fbcb78f704d08cf438835e248c00601c234002d103c94410ca")
+
+set(win64_filename        "dcmqi-1.5.7-win64.zip")
+set(win64_sha256          "dfa86a419ab1ef4af1fbac20720d498a7ffd9f5a7f7f7dd1ad4ac9c138c6b791")