diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 45696771..5cb6e1c9 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -35,6 +35,6 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,lib/SurrogatesAbstractGPs/src,lib/SurrogatesFlux/src,lib/SurrogatesMOE/src,lib/SurrogatesPolyChaos/src,lib/SurrogatesRandomForest/src,lib/SurrogatesSVM/src
-      - 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 31ebb212..3a80711e 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -33,6 +33,6 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,lib/SurrogatesAbstractGPs/src,lib/SurrogatesFlux/src,lib/SurrogatesMOE/src,lib/SurrogatesPolyChaos/src,lib/SurrogatesRandomForest/src,lib/SurrogatesSVM/src
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         with:
           file: lcov.info