diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f11f3e9..0ca4cb4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -9,7 +9,7 @@ jobs:
       matrix:
         os:
           - ubuntu-22.04
-          - ubuntu-20.04
+          - ubuntu-24.04
         compiler:
           - vendor: gnu
             env: { CC: gcc }
@@ -57,9 +57,6 @@ jobs:
       uses: actions/checkout@v3
       with:
         fetch-depth: 1
-    - name: deps
-      run: brew update && brew install
-               libyaml
     - name: build
       env: ${{ matrix.compiler.env }}
       run: LDFLAGS="-L$(brew --prefix)/lib"
diff --git a/.github/workflows/static-analysis.yaml b/.github/workflows/static-analysis.yaml
index 6207472..adf2ca9 100644
--- a/.github/workflows/static-analysis.yaml
+++ b/.github/workflows/static-analysis.yaml
@@ -24,7 +24,7 @@ jobs:
                libyaml-dev
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@v4
       with:
         languages: ${{ matrix.language }}
 
@@ -32,7 +32,7 @@ jobs:
        make
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@v4
 
   scan-build:
     name: scan-build
@@ -58,9 +58,4 @@ jobs:
     - name: scan-build
       run: |
        make clean
-       scan-build -sarif -o build/sarif make
-
-    - name: upload scan-build
-      uses: github/codeql-action/upload-sarif@v2
-      with:
-        sarif_file: build/sarif
+       scan-build make