diff --git a/.github/workflows/otns.yml b/.github/workflows/otns.yml
index 088909893..81b2b34cb 100644
--- a/.github/workflows/otns.yml
+++ b/.github/workflows/otns.yml
@@ -53,7 +53,7 @@ jobs:
       with:
         go-version: '1.14'
     - name: Set up Python 3.6
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v4
       with:
         python-version: 3.6
     - name: Bootstrap
@@ -93,7 +93,7 @@ jobs:
         with:
           go-version: '1.14'
       - name: Set up Python 3.6
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: 3.6
       - name: Bootstrap
@@ -151,7 +151,7 @@ jobs:
         with:
           go-version: '1.14'
       - name: Set up Python 3.6
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v4
         with:
           python-version: 3.6
       - name: Bootstrap