diff --git a/.github/workflows/linux.yaml b/.github/workflows/linux.yaml
index 128f35b..98453ad 100644
--- a/.github/workflows/linux.yaml
+++ b/.github/workflows/linux.yaml
@@ -25,6 +25,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Download ISPC
+        run: |
+          curl -L "https://github.com/ispc/ispc/releases/download/v1.22.0/ispc-v1.22.0-linux.tar.gz" -o ispc.tar.gz
+          tar -xzf ispc.tar.gz
+          echo "${PWD}/ispc-v1.22.0-linux/bin" >> $GITHUB_PATH
+
       # Install system dependencies (opengl)
       - name: Install system dependencies
         run: |
diff --git a/.github/workflows/windows.yaml b/.github/workflows/windows.yaml
index 7bb6b82..d67c8d1 100644
--- a/.github/workflows/windows.yaml
+++ b/.github/workflows/windows.yaml
@@ -25,6 +25,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
 
+      - name: Download ISPC
+        run: |
+          Invoke-WebRequest -Uri "https://github.com/ispc/ispc/releases/download/v1.22.0/ispc-v1.22.0-windows.zip" -OutFile "ispc.zip"
+          7z x ispc.zip
+          "ispc-v1.22.0-windows/bin" >> $env:GITHUB_PATH
+
       # Force xmake to a specific folder (for cache)
       - name: Set xmake env
         run: echo "XMAKE_GLOBALDIR=${{ runner.workspace }}/xmake-global" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append