diff --git a/.github/workflows/test_qlib_from_source.yml b/.github/workflows/test_qlib_from_source.yml
index 2052674afa..68dfe5b3fd 100644
--- a/.github/workflows/test_qlib_from_source.yml
+++ b/.github/workflows/test_qlib_from_source.yml
@@ -28,8 +28,10 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Update pip to the latest version
+      # pip release version 23.1 on Apr.15 2023, CI failed to run, Please refer to #1495 ofr detailed logs.
+      # The pip version has been temporarily fixed to 23.0.1
       run: |
-        python -m pip install --upgrade pip
+        python -m pip install pip==23.0.1
 
     - name: Installing pytorch for macos
       if: ${{ matrix.os == 'macos-11' || matrix.os == 'macos-latest' }}
@@ -39,13 +41,11 @@ jobs:
     - name: Installing pytorch for ubuntu
       if: ${{ matrix.os == 'ubuntu-20.04' || matrix.os == 'ubuntu-22.04' }}
       run: |
-        python -m pip install --upgrade pip
         python -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cpu
 
     - name: Installing pytorch for windows
       if: ${{ matrix.os == 'windows-latest' }}
       run: |
-        python -m pip install --upgrade pip
         python -m pip install torch torchvision torchaudio
 
     - name: Set up Python tools
diff --git a/.github/workflows/test_qlib_from_source_slow.yml b/.github/workflows/test_qlib_from_source_slow.yml
index 656687b893..f8e43fa179 100644
--- a/.github/workflows/test_qlib_from_source_slow.yml
+++ b/.github/workflows/test_qlib_from_source_slow.yml
@@ -28,9 +28,10 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Set up Python tools
+      # pip release version 23.1 on Apr.15 2023, CI failed to run, Please refer to #1495 ofr detailed logs.
+      # The pip version has been temporarily fixed to 23.0.1
       run: |
-        python -m pip install --upgrade pip
-        # python -m pip is necessary to upgrade pip.
+        python -m pip install pip==23.0.1
         pip install --upgrade cython numpy
         pip install -e .[dev]
 
diff --git a/qlib/utils/__init__.py b/qlib/utils/__init__.py
index edf2459bd8..51363f2f7c 100644
--- a/qlib/utils/__init__.py
+++ b/qlib/utils/__init__.py
@@ -428,7 +428,7 @@ def init_instance_by_config(
             pr = urlparse(config)
             if pr.scheme == "file":
                 pr_path = os.path.join(pr.netloc, pr.path) if bool(pr.path) else pr.netloc
-                with open(pr_path, "rb") as f:
+                with open(os.path.normpath(pr_path), "rb") as f:
                     return pickle.load(f)
         else:
             with config.open("rb") as f: