diff --git a/.github/workflows/cache-prune.yml b/.github/workflows/cache-prune.yml
index 847603e7fd1..db22d234c61 100644
--- a/.github/workflows/cache-prune.yml
+++ b/.github/workflows/cache-prune.yml
@@ -30,9 +30,8 @@ jobs:
           caches=$(gh cache list --limit 1000 --sort last_accessed_at --order asc --json id,key,sizeInBytes)
           size=$(jq '[.[].sizeInBytes] | add // 0' <<< "$caches")
           echo "cache usage: $((size / 1000000)) MB"
-          jq -r '.[] | "\(.id) \(.sizeInBytes) \(.key)"' <<< "$caches" |
-            while [ "$size" -gt 6500000000 ] && read -r id bytes key; do
-              echo "deleting $key"
-              gh cache delete "$id"
-              size=$((size - bytes))
-            done
+          while [ "$size" -gt 6500000000 ] && read -r id bytes key; do
+            echo "deleting $key"
+            gh cache delete "$id"
+            size=$((size - bytes))
+          done <<< "$(jq -r '.[] | "\(.id) \(.sizeInBytes) \(.key)"' <<< "$caches")"