diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 132ae72af..bd50b3f72 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -111,8 +111,16 @@ jobs:
       # pstuil is an optional package to detect the number of CPU for compiling mmcv
       - name: Install psutil
         run: pip install psutil
-      - name: Build and install
-        run: rm -rf .eggs && pip install -e .
+      - name: Create sdist and untar
+        run: |
+          MMCV_WITH_OPS=1 python setup.py sdist
+          tar zxvf dist/mmcv-full* -C /tmp
+          rm -r mmcv
+      - name: Build and install from sdist
+        run: |
+          pushd /tmp/mmcv-full*
+          pip install -e .
+          popd
       - name: Validate the installation
         run: python -c "import mmcv"
       - name: Run unittests and generate coverage report
diff --git a/MANIFEST.in b/MANIFEST.in
index 65f232e07..3a9734af3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,3 +3,4 @@ include mmcv/model_zoo/open_mmlab.json mmcv/model_zoo/deprecated.json mmcv/model
 include mmcv/ops/csrc/common/cuda/*.cuh mmcv/ops/csrc/common/cuda/*.hpp mmcv/ops/csrc/common/*.hpp
 include mmcv/ops/csrc/pytorch/*.cpp mmcv/ops/csrc/pytorch/cuda/*.cu mmcv/ops/csrc/pytorch/cuda/*.cpp mmcv/ops/csrc/pytorch/cpu/*.cpp
 include mmcv/ops/csrc/parrots/*.h mmcv/ops/csrc/parrots/*.cpp
+recursive-include mmcv/ops/csrc/ *.h *.hpp *.cpp *.cuh *.cu