diff --git a/action.yml b/action.yml
index 5efc20e..4edec3d 100644
--- a/action.yml
+++ b/action.yml
@@ -17,7 +17,7 @@ runs:
     run: |
       version=$(perl -ne 'next unless /^\s*version\s*=\s*(\d+\.\d+\.\d+)/; print "$1"; last' .scalafmt.conf)
       if [ -z "$version" ]; then
-        echo "Failed to extract scalafmt version from .scalafmt.conf"
+        echo "Failed to extract scalafmt version from .scalafmt.conf" >> "$GITHUB_STEP_SUMMARY"
         exit 1
       fi
       echo "scalafmt_version=$version" >> "$GITHUB_ENV"
diff --git a/run-scalafmt.sh b/run-scalafmt.sh
index 7979602..2fd3269 100755
--- a/run-scalafmt.sh
+++ b/run-scalafmt.sh
@@ -7,7 +7,7 @@ scalafmt --non-interactive $args > "$output" 2> "$warnings"
 result=$?
 cat "$output"
 cat "$warnings" >&2
-[ $result -eq 0 ] && exit
+[ $result -eq 0 ] && echo "All files well-formatted ✨" >> "$GITHUB_STEP_SUMMARY" && exit
 
 report() {
     file="$1"