diff --git a/.github/workflows/build-and-test-mock.yaml b/.github/workflows/build-and-test-mock.yaml
index 31ed13bb..693e2aa9 100644
--- a/.github/workflows/build-and-test-mock.yaml
+++ b/.github/workflows/build-and-test-mock.yaml
@@ -35,7 +35,8 @@ jobs:
 
       - name: Install dependencies
         run: |
-          curl -sSL https://install.python-poetry.org | python -
+          : # NOTE: In Python3.7.11, failed to install poetry>=1.6.1
+          curl -sSL https://install.python-poetry.org | POETRY_VERSION=1.5.1 python -
           echo "$HOME/.local/bin" >> $GITHUB_PATH
           poetry install
 
diff --git a/.github/workflows/build-and-test.yaml b/.github/workflows/build-and-test.yaml
index cce192f8..df90a18b 100644
--- a/.github/workflows/build-and-test.yaml
+++ b/.github/workflows/build-and-test.yaml
@@ -32,7 +32,8 @@ jobs:
 
       - name: Install dependencies
         run: |
-          curl -sSL https://install.python-poetry.org | python -
+          : # NOTE: In Python3.7.11, failed to install poetry>=1.6.1
+          curl -sSL https://install.python-poetry.org | POETRY_VERSION=1.5.1 python -
           echo "$HOME/.local/bin" >> $GITHUB_PATH
           poetry install