diff --git a/.github/workflows/issues.yml b/.github/workflows/issues.yml
index 679bb22b8..0a68dd58f 100644
--- a/.github/workflows/issues.yml
+++ b/.github/workflows/issues.yml
@@ -28,5 +28,5 @@ jobs:
           curl -X DELETE \
             -H 'Accept: application/vnd.github.v3+json' \
             -H 'Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
-            "https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/labels/hacking: in-progress"
+            "https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.issue.number }}/labels/hacking%3A%20in-progress"