diff --git a/.github/workflows/cron-weekly-rustfmt.yml b/.github/workflows/cron-weekly-rustfmt.yml
index ba1152104..046ba8fe3 100644
--- a/.github/workflows/cron-weekly-rustfmt.yml
+++ b/.github/workflows/cron-weekly-rustfmt.yml
@@ -14,7 +14,7 @@ jobs:
           components: rustfmt
       - name: Run Nightly rustfmt
         # Run the formatter and manually remove trailing whitespace.
-        run: cargo +nightly fmt && find . -type f -name '*.rs' -exec sed -i 's/ $//' {} \;
+        run: cargo +nightly fmt && git ls-files -- '*.rs' -z | xargs sed -E -i'' -e 's/[[:space:]]+$//'
       - name: Get the current date
         run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_ENV
       - name: Create Pull Request