diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 908dfc211966..5e20ed4667aa 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -903,11 +903,15 @@ jobs:
         run: yarn test
 
   job_bun_integration_tests:
-    name: Bun Integration Tests
+    name: Bun Integration Tests (${{ matrix.shard }}/2)
     needs: [job_get_metadata, job_build]
     if: needs.job_build.outputs.changed_bun_integration == 'true' || github.event_name != 'pull_request'
     runs-on: ubuntu-24.04
     timeout-minutes: 15
+    strategy:
+      fail-fast: false
+      matrix:
+        shard: [1, 2]
     steps:
       - name: Check out current commit (${{ needs.job_get_metadata.outputs.commit_label }})
         uses: actions/checkout@v7
@@ -928,7 +932,7 @@ jobs:
 
       - name: Run integration tests
         working-directory: dev-packages/bun-integration-tests
-        run: yarn test
+        run: yarn test --shard=${{ matrix.shard }}/2
 
   job_deno_integration_tests:
     name: Deno Integration Tests