diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 093094995..9a80cef96 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -42,6 +42,6 @@ jobs:
           GROUP: ${{ matrix.group }}
           JULIA_NUM_THREADS: 11
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info
diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index adc1628ef..d26b9dd03 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -23,6 +23,6 @@ jobs:
           DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }} # For authentication with SSH deploy key
         run: julia --project=docs/ --code-coverage=user docs/make.jl
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info
diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index 7c2733d03..152b34c9f 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -79,6 +79,6 @@ jobs:
             exit(0)  # Exit immediately, as a success
           end
       - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info