diff --git a/slugify.sh b/slugify.sh
index ba27864..951dbda 100755
--- a/slugify.sh
+++ b/slugify.sh
@@ -57,13 +57,21 @@ SLUG_CS_VALUE=$(slug "$CS_VALUE")
 SLUG_URL_VALUE=$(slug_url "$VALUE")
 SLUG_URL_CS_VALUE=$(slug_url "$CS_VALUE")
 
-{
-  echo "value=${CS_VALUE}" 
-  echo "slug=${SLUG_VALUE}"
-  echo "slug-cs=${SLUG_CS_VALUE}"
-  echo "slug-url=${SLUG_URL_VALUE}"
-  echo "slug-url-cs=${SLUG_URL_CS_VALUE}"
-} >> $GITHUB_OUTPUT
+if [ -f "$GITHUB_OUTPUT" ]; then
+  {
+    echo "value=${CS_VALUE}" 
+    echo "slug=${SLUG_VALUE}"
+    echo "slug-cs=${SLUG_CS_VALUE}"
+    echo "slug-url=${SLUG_URL_VALUE}"
+    echo "slug-url-cs=${SLUG_URL_CS_VALUE}"
+  } >> "$GITHUB_OUTPUT"
+else
+  echo "::set-output name=value::${CS_VALUE}" 
+  echo "::set-output name=slug::${SLUG_VALUE}"
+  echo "::set-output name=slug-cs::${SLUG_CS_VALUE}"
+  echo "::set-output name=slug-url::${SLUG_URL_VALUE}"
+  echo "::set-output name=slug-url-cs::${SLUG_URL_CS_VALUE}"
+fi
 
 if [ "${INPUT_PUBLISH_ENV}" == "true" ]; then
   {