diff --git a/.evergreen/config/functions.yml b/.evergreen/config/functions.yml
index e5a40634a..9130c8e32 100644
--- a/.evergreen/config/functions.yml
+++ b/.evergreen/config/functions.yml
@@ -159,6 +159,26 @@ functions:
     - command: attach.results
       params:
         file_location: "${DRIVERS_TOOLS}/results.json"
+    - command: shell.exec
+      params:
+        working_dir: src
+        script: |
+          ${PREPARE_SHELL}
+          if [ -f test-results.xml ]; then
+            curl -Os https://cli.codecov.io/latest/linux/codecov
+            curl -Os https://cli.codecov.io/latest/linux/codecov.SHA256SUM
+            shasum -a 256 -c codecov.SHA256SUM
+            sudo chmod +x codecov
+            ./codecov upload-process \
+              --report-type test_results \
+              --disable-search \
+              --fail-on-error \
+              --token ${CODECOV_TOKEN} \
+              --flag "${MONGODB_VERSION}-${TOPOLOGY}" \
+              --file test-results.xml
+          else
+            echo "Skipping codecov test result upload"
+          fi
 
   "bootstrap mongo-orchestration":
     - command: shell.exec
@@ -176,6 +196,15 @@ functions:
           ${PREPARE_SHELL}
           SKIP_LEGACY_SHELL=true \
           bash ${DRIVERS_TOOLS}/.evergreen/run-orchestration.sh
+    - command: shell.exec
+      params:
+        include_expansions_in_env:
+          - MONGODB_VERSION
+          - TOPOLOGY
+        script: |
+          printf "\n" >> mo-expansion.yml
+          printf "MONGODB_VERSION: '%s'\n" "${MONGODB_VERSION}" >> mo-expansion.yml
+          printf "TOPOLOGY: '%s'\n" "${TOPOLOGY}" >> mo-expansion.yml
     # run-orchestration generates expansion file with MONGODB_URI and CRYPT_SHARED_LIB_PATH
     - command: expansions.update
       params:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bf4a8b3cf..0b612f55e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -71,10 +71,20 @@ jobs:
           version: ${{ matrix.php-version }}
 
       - name: "Run Tests"
-        run: TEST_PHP_ARGS="-q -x --show-diff -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP" make test
+        run: make test
         env:
+          TEST_PHP_ARGS: "-q -x --show-diff -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP"
+          TEST_PHP_JUNIT: "test-results.xml"
           MONGODB_URI: ${{ steps.setup-mongodb.outputs.cluster-uri }}
 
+      - name: Upload test results to Codecov
+        uses: codecov/test-results-action@v1
+        with:
+          disable_search: true
+          files: test-results.xml
+          flags: "${{ matrix.mongodb-version }}-${{ matrix.topology }}"
+          token: ${{ secrets.CODECOV_TOKEN }}
+
   pecl-test:
     name: "Test PECL package"
     runs-on: "ubuntu-latest"
@@ -176,6 +186,16 @@ jobs:
           topology: "server"
 
       - name: "Run Tests"
-        run: TEST_PHP_ARGS="-q -x --show-diff -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP" make test
+        run: make test
         env:
+          TEST_PHP_ARGS: "-q -x --show-diff -g FAIL,XFAIL,BORK,WARN,LEAK,SKIP"
+          TEST_PHP_JUNIT: "test-results.xml"
           MONGODB_URI: ${{ steps.setup-mongodb.outputs.cluster-uri }}
+
+      - name: Upload test results to Codecov
+        uses: codecov/test-results-action@v1
+        with:
+          disable_search: true
+          files: test-results.xml
+          flags: "${{ ENV.SERVER_VERSION }}-server"
+          token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/.github/workflows/windows-tests.yml b/.github/workflows/windows-tests.yml
index 337c92042..675eacd91 100644
--- a/.github/workflows/windows-tests.yml
+++ b/.github/workflows/windows-tests.yml
@@ -95,5 +95,14 @@ jobs:
           NO_INTERACTION: 1
           REPORT_EXIT_STATUS: 1
           TESTS: --show-diff
+          TEST_PHP_JUNIT: "test-results.xml"
           MONGODB_URI: ${{ steps.setup-mongodb.outputs.cluster-uri }}
           CRYPT_SHARED_LIB_PATH: ${{ steps.setup-mongodb.outputs.crypt-shared-lib-path }}
+
+      - name: Upload test results to Codecov
+        uses: codecov/test-results-action@v1
+        with:
+          disable_search: true
+          files: test-results.xml
+          flags: "${{ matrix.mongodb-version }}-${{ matrix.topology }}"
+          token: ${{ secrets.CODECOV_TOKEN }}