diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a6d14cf..907218e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
       - name: run pytest
         run: pytest --cov=microscope_calibration --cov-report=xml --cov-report=term tests/
       - name: submit code coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
@@ -64,6 +64,6 @@ jobs:
       - name: run pytest
         run: NUMBA_DISABLE_JIT=1 pytest --cov=microscope_calibration --cov-report=xml --cov-report=term tests/
       - name: submit code coverage
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}