diff --git a/.github/workflows/build-openwrt-packages.yml b/.github/workflows/build-openwrt-packages.yml
index 758c6b5d..ca2fd128 100644
--- a/.github/workflows/build-openwrt-packages.yml
+++ b/.github/workflows/build-openwrt-packages.yml
@@ -194,7 +194,7 @@ jobs:
             build-essential clang flex bison g++ gawk \
             gcc-multilib g++-multilib gettext git libncurses5-dev \
             libssl-dev python3-setuptools python3-dev rsync \
-            swig unzip zlib1g-dev file wget curl jq
+            swig unzip zlib1g-dev file wget curl jq ninja-build
 
       - name: Cache OpenWrt SDK
         uses: actions/cache@v4
diff --git a/.github/workflows/build-secubox-images.yml b/.github/workflows/build-secubox-images.yml
index e2da53c3..f2b78ee4 100644
--- a/.github/workflows/build-secubox-images.yml
+++ b/.github/workflows/build-secubox-images.yml
@@ -148,7 +148,7 @@ jobs:
             build-essential clang flex bison g++ gawk \
             gcc-multilib g++-multilib gettext git libncurses5-dev \
             libssl-dev python3-setuptools python3-dev rsync \
-            swig unzip zlib1g-dev file wget curl qemu-utils
+            swig unzip zlib1g-dev file wget curl qemu-utils ninja-build
 
       - name: Clone OpenWrt
         run: |
diff --git a/secubox-tools/README.md b/secubox-tools/README.md
index 7c495c71..3445d274 100644
--- a/secubox-tools/README.md
+++ b/secubox-tools/README.md
@@ -74,7 +74,7 @@ Build and test packages locally without pushing to GitHub. Automatically downloa
 sudo apt-get install -y build-essential clang flex bison g++ gawk \
     gcc-multilib g++-multilib gettext git libncurses5-dev \
     libssl-dev python3-setuptools python3-dev rsync \
-    swig unzip zlib1g-dev file wget curl jq
+    swig unzip zlib1g-dev file wget curl jq ninja-build
 
 # Optional for validation
 sudo apt-get install -y shellcheck nodejs
diff --git a/secubox-tools/local-build.sh b/secubox-tools/local-build.sh
index efc54797..b727386a 100755
--- a/secubox-tools/local-build.sh
+++ b/secubox-tools/local-build.sh
@@ -117,7 +117,7 @@ check_dependencies() {
     local missing_deps=()
 
     # Build tools
-    for cmd in make gcc g++ git wget curl tar xz jq; do
+    for cmd in make gcc g++ git wget curl tar xz jq ninja; do
         if ! command -v "$cmd" &> /dev/null; then
             missing_deps+=("$cmd")
         fi
@@ -137,7 +137,7 @@ check_dependencies() {
         echo "  sudo apt-get install -y build-essential clang flex bison g++ gawk \\"
         echo "    gcc-multilib g++-multilib gettext git libncurses5-dev \\"
         echo "    libssl-dev python3-setuptools python3-dev rsync \\"
-        echo "    swig unzip zlib1g-dev file wget curl jq"
+        echo "    swig unzip zlib1g-dev file wget curl jq ninja-build"
         echo ""
         echo "For validation tools:"
         echo "  sudo apt-get install -y shellcheck nodejs"