diff --git a/.github/workflows/conda.yaml b/.github/workflows/conda.yaml
index 882a424451..1daa5bcecc 100644
--- a/.github/workflows/conda.yaml
+++ b/.github/workflows/conda.yaml
@@ -33,7 +33,7 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: install-conda-build
-        run: conda install conda-build anaconda-client
+        run: conda install conda-build=3.20.4 anaconda-client
       - name: conda-config
         run: conda config --add channels conda-forge && conda config --add channels nusdbsystem && conda config --set anaconda_upload no
       - name: build-pytest
@@ -68,4 +68,4 @@ jobs:
         env: 
           ANACONDA_UPLOAD_TOKEN: ${{ secrets.ANACONDA_UPLOAD_TOKEN }}
         if: ${{ env.ANACONDA_UPLOAD_TOKEN }}
-        run: /usr/local/miniconda/bin/anaconda -t $ANACONDA_UPLOAD_TOKEN upload -u nusdbsystem -l main /usr/local/miniconda/conda-bld/osx-64/singa-*.tar.bz2 --force
\ No newline at end of file
+        run: /usr/local/miniconda/bin/anaconda -t $ANACONDA_UPLOAD_TOKEN upload -u nusdbsystem -l main /usr/local/miniconda/conda-bld/osx-64/singa-*.tar.bz2 --force