diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index 28cf3ad9dc2..6dc3ff2bbd9 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -5,6 +5,7 @@ on:
 
 permissions:
   issues: write
+  pull-requests: write
 
 jobs:
   stale:
@@ -13,6 +14,10 @@ jobs:
       - uses: actions/stale@v8
         with:
           stale-issue-message: 'This issue has been marked as stale because it has been open for 30 days with no activity. This thread will be automatically closed in 5 days if no further activity occurs.'
+          stale-pr-message: 'This PR has been marked as stale because it has been open for 90 days with no activity. This thread will be automatically closed in 30 days if no further activity occurs.'
           exempt-issue-labels: 'bug,exporters,good first issue,onnx,onnxruntime,quantization'
-          days-before-stale: 30
-          days-before-close: 5
+          days-before-issue-stale: 30
+          days-before-issue-close: 5
+          days-before-pr-stale: 90
+          days-before-pr-close: 30
+          exempt-all-pr-assignees: true
\ No newline at end of file