diff --git a/scripts/deployment/phoenix-deploy-dbis-portal-live-from-workspace.sh b/scripts/deployment/phoenix-deploy-dbis-portal-live-from-workspace.sh
index 190c9ee3..49756555 100755
--- a/scripts/deployment/phoenix-deploy-dbis-portal-live-from-workspace.sh
+++ b/scripts/deployment/phoenix-deploy-dbis-portal-live-from-workspace.sh
@@ -125,13 +125,25 @@ if ! command -v node >/dev/null 2>&1; then
   apt-get install -y nodejs
 fi
 
+export PATH="/usr/local/bin:/usr/bin:/bin:\$PATH"
 if ! command -v pnpm >/dev/null 2>&1; then
   npm install -g pnpm@8.15.0
+  hash -r
 fi
+PNPM_BIN="\$(command -v pnpm || true)"
+if [ -z "\$PNPM_BIN" ]; then
+  for candidate in /usr/local/bin/pnpm /usr/bin/pnpm; do
+    if [ -x "\$candidate" ]; then
+      PNPM_BIN="\$candidate"
+      break
+    fi
+  done
+fi
+[ -n "\$PNPM_BIN" ] || { echo "pnpm is required but was not found after install" >&2; exit 1; }
 
 cd "\$CT_APP_DIR"
-pnpm install --frozen-lockfile
-pnpm --filter portal-dbis build
+"\$PNPM_BIN" install --frozen-lockfile
+"\$PNPM_BIN" --filter portal-dbis build
 
 cat > "/etc/systemd/system/\$SERVICE_NAME.service" <<UNIT
 [Unit]