diff --git a/src/utils.ts b/src/utils.ts
index 780e6aa..92a3546 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -29,7 +29,7 @@ const extractHeadingsFromMd = (
   lowestTargetHeadings: number
 ): RegExpMatchArray | null => {
   const headingRegex = new RegExp(
-    `^#{${highestTargetHeadings},${lowestTargetHeadings}}\\s.+\\n`,
+    `^#{${highestTargetHeadings},${lowestTargetHeadings}}\\s.+(\\n|\\r|\\r\\n)`,
     "gm"
   );
   return markdownText.match(headingRegex);