diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
index 211c1716f..fe0b50eda 100644
--- a/.github/workflows/build_test.yml
+++ b/.github/workflows/build_test.yml
@@ -8,6 +8,7 @@ permissions:
       id-token: write
       contents: read
       statuses: write
+      pull-requests: write
 jobs:
   unittest-check:
     runs-on: ubuntu-latest
diff --git a/tests/py3_mxnet_ci.yml b/tests/py3_mxnet_ci.yml
index e43de64dc..222f71142 100644
--- a/tests/py3_mxnet_ci.yml
+++ b/tests/py3_mxnet_ci.yml
@@ -11,7 +11,7 @@ dependencies:
   - scipy
   - cython
   - pip=20.2.4
-  - requests
+  - requests==2.27.1
   - matplotlib
   - tqdm
   - pillow