diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 5d340463..bba0ff2a 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -42,6 +42,6 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,ext
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           files: lcov.info
diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index d90b7517..edd131d1 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -57,6 +57,6 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,ext
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           files: lcov.info
\ No newline at end of file