diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c696950..dc1aed0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,11 +33,6 @@ jobs:
           cd ${{ github.workspace }}
           wget https://www.dropbox.com/s/4pckqsjnl920gpn/cuda-10.1.tar.gz?dl=1
           tar -xzf 'cuda-10.1.tar.gz?dl=1'
-      - name: Download lock-free queue header file
-        run: |
-          cd ${{ github.workspace }}
-          cd runtime/threadPool
-          git clone https://github.com/cameron314/concurrentqueue.git
       - name: Build project
         run: |
           mkdir build
@@ -47,7 +42,7 @@ jobs:
       - name: clone SC evaluation code
         run: |
           cd ${{ github.workspace }}
-          git clone https://github.com/drcut/SC_evaluate
+          git clone --recursive https://github.com/drcut/SC_evaluate
       - name: Download data used to verify
         run: |
           cd ${{ github.workspace }}/SC_evaluate/Hetero-cox
diff --git a/README.md b/README.md
index 1ba88f6..7aac4b8 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Supporting [Vortex](https://vortex.cc.gatech.edu/) backend is working in progres
 1. Clone from github
 
    ```bash
-   git clone https://github.com/drcut/CuPBoP
+   git clone --recursive https://github.com/drcut/CuPBoP
    cd CuPBoP
    export CuPBoP_PATH=`pwd`
    export LD_LIBRARY_PATH=$CuPBoP_PATH/build/runtime:$CuPBoP_PATH/build/runtime/threadPool:$LD_LIBRARY_PATH