diff --git a/.github/workflows/CI_BoundaryValueDiffEq.yml b/.github/workflows/CI_BoundaryValueDiffEq.yml
index b9543398..3f5887e8 100644
--- a/.github/workflows/CI_BoundaryValueDiffEq.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEq.yml
@@ -73,9 +73,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,ext,lib/BoundaryValueDiffEqCore/src,lib/BoundaryValueDiffEqMIRK/src,lib/BoundaryValueDiffEqMIRKN/src,lib/BoundaryValueDiffEqFIRK/src,lib/BoundaryValueDiffEqShooting/src,lib/BoundaryValueDiffEqAscher/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -111,9 +111,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: src,ext,lib/BoundaryValueDiffEqCore/src,lib/BoundaryValueDiffEqMIRK/src,lib/BoundaryValueDiffEqMIRKN/src,lib/BoundaryValueDiffEqFIRK/src,lib/BoundaryValueDiffEqShooting/src,lib/BoundaryValueDiffEqAscher/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqAscher.yml b/.github/workflows/CI_BoundaryValueDiffEqAscher.yml
index c4ffd71c..d101425b 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqAscher.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqAscher.yml
@@ -67,9 +67,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqAscher/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -105,9 +105,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqAscher/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqCore.yml b/.github/workflows/CI_BoundaryValueDiffEqCore.yml
index 50a6f784..4c885c7d 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqCore.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqCore.yml
@@ -60,9 +60,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -89,9 +89,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqFIRK.yml b/.github/workflows/CI_BoundaryValueDiffEqFIRK.yml
index 77f9fbbb..9f11463d 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqFIRK.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqFIRK.yml
@@ -70,9 +70,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqFIRK/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -113,9 +113,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqFIRK/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqMIRK.yml b/.github/workflows/CI_BoundaryValueDiffEqMIRK.yml
index 876f541e..7cc713bb 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqMIRK.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqMIRK.yml
@@ -67,9 +67,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqMIRK/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -105,9 +105,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqMIRK/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqMIRKN.yml b/.github/workflows/CI_BoundaryValueDiffEqMIRKN.yml
index 6540b1e7..5ce979cb 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqMIRKN.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqMIRKN.yml
@@ -67,9 +67,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqMIRKN/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -105,9 +105,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqMIRKN/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
diff --git a/.github/workflows/CI_BoundaryValueDiffEqShooting.yml b/.github/workflows/CI_BoundaryValueDiffEqShooting.yml
index 49ed1f7b..8e9f5105 100644
--- a/.github/workflows/CI_BoundaryValueDiffEqShooting.yml
+++ b/.github/workflows/CI_BoundaryValueDiffEqShooting.yml
@@ -67,9 +67,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqShooting/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false
@@ -105,9 +105,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
         with:
           directories: lib/BoundaryValueDiffEqShooting/src,lib/BoundaryValueDiffEqCore/src
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
           verbose: true
           fail_ci_if_error: false