diff --git a/scripts/build-desktop.sh b/scripts/build-desktop.sh
index ca286ad..d9f690e 100755
--- a/scripts/build-desktop.sh
+++ b/scripts/build-desktop.sh
@@ -98,7 +98,12 @@ chmod +x "$WORK_TREE/scripts/prepare-tauri-build.sh" 2>/dev/null || true
 # shellcheck disable=SC1091
 source "$WORK_TREE/scripts/prepare-tauri-build.sh"
 
-npm install
+echo "--- npm ci (monorepo) ---"
+if [[ -f package-lock.json ]]; then
+  npm ci --prefer-offline
+else
+  npm install
+fi
 
 echo "--- Vite build (desktop) ---"
 export DESKTOP_APP_VERSION="$VERSION"
diff --git a/scripts/prepare-desktop-jenkins-build.sh b/scripts/prepare-desktop-jenkins-build.sh
index 5814675..a2036f4 100755
--- a/scripts/prepare-desktop-jenkins-build.sh
+++ b/scripts/prepare-desktop-jenkins-build.sh
@@ -37,5 +37,13 @@ if [[ -f "$WORK_TREE/desktop/updater.pub" ]]; then
   "$WORK_TREE/scripts/patch-tauri-updater-pubkey.sh"
 fi
 
+log "npm ci (monorepo deps — git reset 후 node_modules 불일치 방지)"
+cd "$WORK_TREE"
+if [[ -f package-lock.json ]]; then
+  npm ci --prefer-offline
+else
+  npm install
+fi
+
 log "HEAD $(git -C "$WORK_TREE" rev-parse --short HEAD 2>/dev/null || echo n/a)"
 log "prepare OK"