diff --git a/.github/workflows/install.yml b/.github/workflows/install.yml
index 78e770041..7aa975425 100644
--- a/.github/workflows/install.yml
+++ b/.github/workflows/install.yml
@@ -17,7 +17,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install Ersilia
@@ -37,7 +37,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install Ersilia without pre-installing BentoML