diff --git a/.github/workflows/milestone.yml b/.github/workflows/milestone.yml
index 318daef..4554d8a 100644
--- a/.github/workflows/milestone.yml
+++ b/.github/workflows/milestone.yml
@@ -16,9 +16,18 @@ jobs:
           github-token: ${{secrets.GITHUB_TOKEN}}
           script: |
             const milestone = 3
-            github.issues.update({
-              issue_number: context.issue.number,
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              milestone
-            })
\ No newline at end of file
+            if (context.eventName === 'issues') {
+              github.issues.update({
+                issue_number: context.issue.number,
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                milestone
+              })
+            } else {
+              github.pulls.update({
+                pull_number: context.issue.number,
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                milestone
+              })
+            }
\ No newline at end of file