diff --git a/.github/packaging/pre_build_gpu.sh b/.github/packaging/pre_build_gpu.sh
index 9a7dd653b..267c8caca 100644
--- a/.github/packaging/pre_build_gpu.sh
+++ b/.github/packaging/pre_build_gpu.sh
@@ -49,6 +49,7 @@ build_monarch() {
     export CARGO_TERM_VERBOSE=true
     export CARGO_TERM_COLOR=always
     pip wheel --no-build-isolation --no-deps . -w "$WHL_DIR"
+
 }
 
 append_date() {
@@ -67,6 +68,15 @@ append_date() {
     fi
 }
 
+smoke_test() {
+    cd "$WHL_DIR"
+    pip install --pre torch --no-cache-dir --index-url https://download.pytorch.org/whl/nightly/cu129
+    pip install -r https://raw.githubusercontent.com/meta-pytorch/monarch/main/requirements.txt
+    pip install torchmonarch-0.0.1-cp310-cp310-linux_x86_64.whl
+    python -c "from monarch import actor"
+    echo "import successful"
+}
 
 build_monarch
-append_date
\ No newline at end of file
+append_date
+smoke_test
\ No newline at end of file
diff --git a/.github/workflows/build_vllm.yaml b/.github/workflows/build_vllm.yaml
index 0e8279ac4..4b6c59d2b 100644
--- a/.github/workflows/build_vllm.yaml
+++ b/.github/workflows/build_vllm.yaml
@@ -1,6 +1,7 @@
 name: Build pinned vLLM against PyTorch nightly and upload
 
 on:
+  pull_request:
   push:
     branches:
       - nightly
diff --git a/.github/workflows/build_wheels.yaml b/.github/workflows/build_wheels.yaml
index a384991cd..40a07ab1e 100644
--- a/.github/workflows/build_wheels.yaml
+++ b/.github/workflows/build_wheels.yaml
@@ -1,6 +1,7 @@
 name: Build nightly wheels and publish to PyTorch Index
 
 on:
+  pull_request:
   push:
     branches:
       - nightly