diff --git a/.github/workflows/basic.yml b/.github/workflows/basic.yml
index e6ab9bc..a7ca16b 100644
--- a/.github/workflows/basic.yml
+++ b/.github/workflows/basic.yml
@@ -12,11 +12,11 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-20.04, ubuntu-22.04 ]
+        os: [ ubuntu-22.04, ubuntu-latest ]
         compiler: [ gcc, clang ]
         BUILD_TYPE: [ Debug, Release ]
     steps:
-    - uses: actions/checkout@v3 
+    - uses: actions/checkout@v4
     - name: dependencies
       run: sudo apt install libeigen3-dev
     - name: configure
@@ -27,3 +27,4 @@ jobs:
       run: cmake --build build -- -j4
     - name: test
       run: cd build && ctest
+
diff --git a/.github/workflows/checkformat.yml b/.github/workflows/checkformat.yml
index a2846ca..9a16079 100644
--- a/.github/workflows/checkformat.yml
+++ b/.github/workflows/checkformat.yml
@@ -13,10 +13,11 @@ jobs:
       matrix:
         compiler: [gcc]
     steps:
-    - uses: actions/checkout@v3 
+    - uses: actions/checkout@v4
     - name: dependencies
       run: sudo apt install libeigen3-dev clang-format
     - name: cmake
       run: cmake -B builddir
     - name: Format
       run: cmake --build builddir --target format && git diff --exit-code
+
diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 71769d4..c135049 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -8,13 +8,13 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
         compiler: [ gcc ]
         BUILD_TYPE : [ Debug ]
     steps:
-    - uses: actions/checkout@v3 
+    - uses: actions/checkout@v4
     - name: dependencies
       run: sudo apt install libeigen3-dev lcov
     - name: configure
@@ -28,4 +28,5 @@ jobs:
     - name: Generate coverage data
       run: lcov --directory . --capture --output-file coverage.info
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v5
+