diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 38b5dd299..6e4aba9cf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -32,7 +32,7 @@ jobs:
 
   build:
     name: build-agent-library
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.run_qemu && 'observability-linux-2-arm64' || 'ubuntu-latest' }}
     needs: setup-build-matrix
     timeout-minutes: 300
     strategy:
@@ -42,10 +42,6 @@ jobs:
       BUILD_ARCHITECTURE: ${{ matrix.arch }}
     steps:
       - uses: actions/checkout@v4
-      - if: ${{ matrix.run_qemu }}
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
       - name: Build
         run: |
           uname -a
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index e65acb668..eea59f994 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -42,10 +42,10 @@ jobs:
 
   phpt-tests:
     name: phpt-tests
-    runs-on: ubuntu-latest
     needs:
       - build
       - setup-build-matrix
+    runs-on: ${{ matrix.data.run_qemu && 'observability-linux-2-arm64' || 'ubuntu-latest' }}
     timeout-minutes: 120
     strategy:
       fail-fast: false
@@ -68,10 +68,6 @@ jobs:
         with:
           name: package-parts-${{ matrix.data.arch }}
           path: agent/native/_build/${{ matrix.data.arch }}-release/
-      - if: ${{ matrix.data.run_qemu }}
-        uses: docker/setup-qemu-action@v3
-        with:
-          platforms: arm64
       - name: Prepare
         run: make -f .ci/Makefile prepare
       - name: phpt-unit-tests