diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 0deb26e0..06e69f53 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -17,7 +17,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get update && sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-dev libnlopt-cxx-dev libboost-all-dev libbenchmark-dev
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release
diff --git a/.github/workflows/benchmark_on_pr.yml b/.github/workflows/benchmark_on_pr.yml
index 0936718f..1a4cd37e 100644
--- a/.github/workflows/benchmark_on_pr.yml
+++ b/.github/workflows/benchmark_on_pr.yml
@@ -22,7 +22,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get update && sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-dev libnlopt-cxx-dev libboost-all-dev libbenchmark-dev
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. -DCMAKE_BUILD_TYPE=Release
diff --git a/.github/workflows/build-mac.yml b/.github/workflows/build-mac.yml
index 3a37d368..ab8eefbe 100644
--- a/.github/workflows/build-mac.yml
+++ b/.github/workflows/build-mac.yml
@@ -20,7 +20,7 @@ jobs:
     - name: installPackages
       run: brew install eigen && brew install gsl && brew install nlopt && brew install boost && brew install libomp && brew install nlohmann-json
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake ..
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b236ca39..bdef6a5d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-dev libnlopt-cxx-dev libboost-all-dev nlohmann-json3-dev
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. 
diff --git a/.github/workflows/build_on_windows.yml b/.github/workflows/build_on_windows.yml
index 5178e044..f22a25a4 100644
--- a/.github/workflows/build_on_windows.yml
+++ b/.github/workflows/build_on_windows.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Refresh Shell
       run: refreshenv
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: cmake -S . -B build -DUseConan=On -DCMAKE_BUILD_TYPE=Release
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 77926ddf..23bb01fb 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -33,7 +33,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get update && sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-dev libnlopt-cxx-dev libboost-all-dev lcov
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. -DEnableCoverage=On
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 042bf3a7..2bfcc580 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -42,7 +42,7 @@ jobs:
         if: matrix.language == 'cpp'
         
       - name: Get number of CPU cores
-        uses: SimenB/github-actions-cpu-cores@v1
+        uses: SimenB/github-actions-cpu-cores@v2
         id: cpu-cores
         if: matrix.language == 'cpp'
       - name: cmake
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 5473b9cc..2b74cf7f 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -20,7 +20,7 @@ jobs:
      - name: installPackages
        run: sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-cxx-dev libboost-all-dev doxygen
      - name: Get number of CPU cores
-       uses: SimenB/github-actions-cpu-cores@v1
+       uses: SimenB/github-actions-cpu-cores@v2
        id: cpu-cores
      - name: cmake
        run: mkdir build && cd build && cmake .. && cmake --build . -j${{ steps.cpu-cores.outputs.count }} -t doc
diff --git a/.github/workflows/test-mac.yml b/.github/workflows/test-mac.yml
index 08f1de6d..40248164 100644
--- a/.github/workflows/test-mac.yml
+++ b/.github/workflows/test-mac.yml
@@ -24,7 +24,7 @@ jobs:
     - name : installPackages
       run : brew install eigen gsl nlopt boost libomp nlohmann-json
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. 
@@ -44,7 +44,7 @@ jobs:
     - name : installPackages
       run : brew install eigen gsl boost libomp nlohmann-json
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir buildNoNLOPT && cd buildNoNLOPT && cmake .. 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 536293fb..7fb41976 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get update && sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libnlopt-dev libnlopt-cxx-dev libboost-all-dev
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir build && cd build && cmake .. 
@@ -44,7 +44,7 @@ jobs:
     - name : installPackages
       run : sudo apt-get update && sudo apt-get install --no-install-recommends --yes libgsl-dev libeigen3-dev libboost-all-dev
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: mkdir buildNoNLOPT && cd buildNoNLOPT && cmake .. 
diff --git a/.github/workflows/windows_unit_tests.yml b/.github/workflows/windows_unit_tests.yml
index f524b0d1..76a971f6 100644
--- a/.github/workflows/windows_unit_tests.yml
+++ b/.github/workflows/windows_unit_tests.yml
@@ -30,7 +30,7 @@ jobs:
     - name: Refresh Shell
       run: refreshenv
     - name: Get number of CPU cores
-      uses: SimenB/github-actions-cpu-cores@v1
+      uses: SimenB/github-actions-cpu-cores@v2
       id: cpu-cores
     - name: cmake
       run: cmake -S . -B build -DUseConan=On -DCMAKE_BUILD_TYPE=Release