diff --git a/.github/workflows/build-artifacts.yml b/.github/workflows/build-artifacts.yml
index 4da0d95a..4d288b92 100644
--- a/.github/workflows/build-artifacts.yml
+++ b/.github/workflows/build-artifacts.yml
@@ -67,6 +67,10 @@ jobs:
           bun-version: latest
       - name: Build SPA (vite -> ui/.output/public)
         working-directory: ui
+        # vite's bundle exceeds Node's default ~2 GB heap (the build that needed an
+        # 8 GB swapfile on-box); the runner has ~16 GB, so lift the heap cap.
+        env:
+          NODE_OPTIONS: "--max-old-space-size=8192"
         run: |
           bun install --frozen-lockfile
           bun run build
@@ -101,6 +105,10 @@ jobs:
           bun-version: latest
       - name: Build SPA (vite -> ui/.output/public)
         working-directory: ui
+        # vite's bundle exceeds Node's default ~2 GB heap (the build that needed an
+        # 8 GB swapfile on-box); the runner has ~16 GB, so lift the heap cap.
+        env:
+          NODE_OPTIONS: "--max-old-space-size=8192"
         run: |
           bun install --frozen-lockfile
           bun run build