diff --git a/.github/workflows/multi-gpu-e2e.yml b/.github/workflows/multi-gpu-e2e.yml
index c435e0a3a..50204a750 100644
--- a/.github/workflows/multi-gpu-e2e.yml
+++ b/.github/workflows/multi-gpu-e2e.yml
@@ -60,7 +60,7 @@ jobs:
           version: "latest"
       - name: Install Modal
         run: |
-          uv pip install --system modal==1.0.2 jinja2 protobuf
+          uv pip install --python "$(which python3)" modal==1.0.2 jinja2 protobuf
       - name: Update env vars
         run: |
           echo "BASE_TAG=${{ github.ref_name }}-base-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}" >> $GITHUB_ENV
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 15471c449..9e0d838df 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -250,7 +250,7 @@ jobs:
           version: "latest"
       - name: Install Modal
         run: |
-          uv pip install --system modal==1.0.2 jinja2 protobuf
+          uv pip install --python "$(which python3)" modal==1.0.2 jinja2 protobuf
       - name: Update env vars
         run: |
           echo "BASE_TAG=${{ github.ref_name }}-base-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}" >> $GITHUB_ENV
@@ -314,7 +314,7 @@ jobs:
           version: "latest"
       - name: Install Modal
         run: |
-          uv pip install --system modal==1.0.2 jinja2 protobuf
+          uv pip install --python "$(which python3)" modal==1.0.2 jinja2 protobuf
       - name: Update env vars
         run: |
           echo "BASE_TAG=${{ github.ref_name }}-base-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}" >> $GITHUB_ENV
@@ -360,7 +360,7 @@ jobs:
           version: "latest"
       - name: Install Modal
         run: |
-          uv pip install --system modal==1.0.2 jinja2 protobuf
+          uv pip install --python "$(which python3)" modal==1.0.2 jinja2 protobuf
       - name: Update env vars
         run: |
           echo "BASE_TAG=${{ github.ref_name }}-base-py${{ matrix.python_version }}-cu${{ matrix.cuda }}-${{ matrix.pytorch }}" >> $GITHUB_ENV