diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 993722c91..f17b524c8 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -30,6 +30,9 @@ steps:
 
   - label: '[Browser] Lint + Test'
     key: browser-lint-test
+    env:
+      SEGMENT_CODECOV_FLAGS: 'browser'
+      SEGMENT_CODECOV_ARGS: '--dir=./packages/browser/coverage'
     agents:
       queue: v1
     commands:
@@ -82,6 +85,9 @@ steps:
           paths: ['.yarn/cache/']
 
   - label: '[Core] Lint + Test'
+    env:
+      SEGMENT_CODECOV_FLAGS: 'core'
+      SEGMENT_CODECOV_ARGS: '--dir=./packages/core/coverage'
     agents:
       queue: v1
     commands:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a7db4a5a2..2f6617cdb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,8 +26,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-turbo-
       - run: yarn turbo run --filter='./packages/node*' lint
-      - run: yarn turbo run --filter='./packages/node*' test
+      - run: COVERAGE=true yarn turbo run --filter='./packages/node*' test
       - run: yarn turbo run --filter='./packages/node-integration-tests' test:perf-and-durability
+      - uses: codecov/codecov-action@v5
+        with:
+          fail_ci_if_error: true
+          flags: node
+          directory: ./packages/node/coverage
+          token: ${{ secrets.CODECOV_TOKEN }}
   analytics-node-cf-workers:
     name: 'analytics-node QA (Cloudflare Workers)'
     runs-on: ubuntu-latest