diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 2903b709..ba93558b 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:
           file: lcov.info
diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index 6a08fca1..8df36d1e 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -24,6 +24,6 @@ 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 0ba79820..0f087381 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -61,6 +61,6 @@ 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