diff --git a/.github/workflows/test_models.yml b/.github/workflows/test_models.yml
index 20f5474..3611f25 100644
--- a/.github/workflows/test_models.yml
+++ b/.github/workflows/test_models.yml
@@ -42,6 +42,9 @@ jobs:
     # Custom job name, now shortened and cleaner
     name: ${{ matrix.test-modeling }} (et=${{ matrix.executorch-version }}, py=${{ matrix.python-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
+    # Fail cleanly on a hang instead of dragging the run for hours; large-model
+    # export can be slow (especially once paging to swap), so keep this generous.
+    timeout-minutes: 180
     env:
       MODEL_NAME: ${{ matrix.test-modeling }}
     steps:
@@ -50,6 +53,21 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Increase swap space
+        run: |
+          # Large models (e.g. gemma-3-4b, Phi-4-mini) push past the 16GB RAM on
+          # standard runners and get OOM-killed during load/quantization
+          # (exit 143). A big swapfile lets them page to disk instead of being killed.
+          echo "Memory before:"
+          free -h
+          sudo swapoff -a || true
+          sudo rm -f /mnt/swapfile || true
+          sudo fallocate -l 24G /mnt/swapfile || sudo dd if=/dev/zero of=/mnt/swapfile bs=1M count=24576
+          sudo chmod 600 /mnt/swapfile
+          sudo mkswap /mnt/swapfile
+          sudo swapon /mnt/swapfile
+          echo "Memory after:"
+          free -h
       - name: Install dependencies for ExecuTorch
         run: |
           # Clean up cache to save space
diff --git a/.github/workflows/test_models_nightly.yml b/.github/workflows/test_models_nightly.yml
index aabc021..39f6c47 100644
--- a/.github/workflows/test_models_nightly.yml
+++ b/.github/workflows/test_models_nightly.yml
@@ -38,6 +38,9 @@ jobs:
 
     name: ${{ matrix.test-modeling }} (et=nightly, py=${{ matrix.python-version }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
+    # Fail cleanly on a hang instead of dragging the run for hours; large-model
+    # export can be slow (especially once paging to swap), so keep this generous.
+    timeout-minutes: 180
     env:
       MODEL_NAME: ${{ matrix.test-modeling }}
     steps:
@@ -46,6 +49,21 @@ jobs:
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+      - name: Increase swap space
+        run: |
+          # Large models (e.g. gemma-3-4b, Phi-4-mini) push past the 16GB RAM on
+          # standard runners and get OOM-killed during load/quantization
+          # (exit 143). A big swapfile lets them page to disk instead of being killed.
+          echo "Memory before:"
+          free -h
+          sudo swapoff -a || true
+          sudo rm -f /mnt/swapfile || true
+          sudo fallocate -l 24G /mnt/swapfile || sudo dd if=/dev/zero of=/mnt/swapfile bs=1M count=24576
+          sudo chmod 600 /mnt/swapfile
+          sudo mkswap /mnt/swapfile
+          sudo swapon /mnt/swapfile
+          echo "Memory after:"
+          free -h
       - name: Install dependencies for ExecuTorch nightly
         run: |
           pip cache purge || true