diff --git a/.github/workflows/arm-segv-experiment.yml b/.github/workflows/arm-segv-experiment.yml
deleted file mode 100644
index ed13e13aa6b..00000000000
--- a/.github/workflows/arm-segv-experiment.yml
+++ /dev/null
@@ -1,50 +0,0 @@
-name: AArch64 SIGSEGV experiment
-
-on: push
-
-jobs:
-  test-fast:
-    strategy:
-      matrix:
-        num-high: [ 0, 1, 2, 3 ]
-        os-ver: [ '22.04', '24.04' ]
-        channel: [ stable, beta ]  # `gix-macros::macros momo::ux` currently fails on `nightly`.
-        get-rust-by: [ rt-action, curl-sh ]
-        get-nextest-by: [ i-action, cargo-qi ]
-        num-low: [ 0, 1, 2, 3 ]
-
-      fail-fast: false
-
-    runs-on: ubuntu-${{ matrix.os-ver }}-arm
-
-    steps:
-      - uses: actions/checkout@v4
-      - if: matrix.get-rust-by == 'rt-action'
-        uses: dtolnay/rust-toolchain@master
-        with:
-          toolchain: ${{ matrix.channel }}
-      - if: matrix.get-rust-by == 'curl-sh'
-        name: Install Rust via sh.rustup.rs
-        run: |
-          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs |
-            sh -s -- -y --default-toolchain ${{ matrix.channel }}
-          echo "PATH=$HOME/.cargo/bin:$PATH" >> "$GITHUB_ENV"
-      # - uses: Swatinem/rust-cache@v2
-      - if: matrix.get-nextest-by == 'i-action'
-        uses: taiki-e/install-action@v2
-        with:
-          tool: nextest
-      - if: matrix.get-nextest-by == 'cargo-qi'
-        name: Install nextest with quickinstall/binstall
-        run: |
-          cargo install cargo-quickinstall
-          cargo quickinstall cargo-binstall
-          cargo quickinstall cargo-nextest
-      - name: Test (nextest)
-        env:
-          GIX_TEST_CREATE_ARCHIVES_EVEN_ON_CI: '1'
-        run: cargo nextest run --workspace --no-fail-fast
-      - name: Doctest
-        run: cargo test --workspace --doc --no-fail-fast
-      - name: Check that tracked archives are up to date
-        run: git diff --exit-code  # If this fails, the fix is usually to commit a regenerated archive.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 06d9491298d..55f119dcf4c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -135,6 +135,7 @@ jobs:
           - windows-latest
           - macos-latest
           - ubuntu-latest
+          - ubuntu-22.04-arm
 
     runs-on: ${{ matrix.os }}
 
@@ -160,25 +161,6 @@ jobs:
       - name: Check that tracked archives are up to date
         run: git diff --exit-code  # If this fails, the fix is usually to commit a regenerated archive.
 
-  test-fast-arm:
-    runs-on: ubuntu-24.04-arm
-
-    steps:
-      - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
-      - uses: Swatinem/rust-cache@v2
-      - uses: taiki-e/install-action@v2
-        with:
-          tool: nextest
-      - name: Test (nextest)
-        env:
-          GIX_TEST_CREATE_ARCHIVES_EVEN_ON_CI: '1'
-        run: cargo nextest run --workspace --no-fail-fast
-      - name: Doctest
-        run: cargo test --workspace --doc --no-fail-fast
-      - name: Check that tracked archives are up to date
-        run: git diff --exit-code  # If this fails, the fix is usually to commit a regenerated archive.
-
   test-fixtures-windows:
     runs-on: windows-latest
 
@@ -405,7 +387,6 @@ jobs:
     env:
       # List all jobs that are intended NOT to block PR auto-merge here.
       EXPECTED_NONBLOCKING_JOBS: |-
-        test-fast-arm
         cargo-deny-advisories
         wasm
         tests-pass