diff --git a/.changeset/strange-tools-smile.md b/.changeset/strange-tools-smile.md
new file mode 100644
index 0000000..02d7d18
--- /dev/null
+++ b/.changeset/strange-tools-smile.md
@@ -0,0 +1,5 @@
+---
+"esbuild-plugin-preserve-directives": patch
+---
+
+Account for single-quote directives
diff --git a/package.json b/package.json
index a431055..b5cc3e1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "esbuild-plugin-preserve-directives",
-  "version": "0.0.8",
+  "version": "0.0.9",
   "description": "An esbuild plugin to preserve important directives like 'use client' at the top of output files.",
   "author": "seojunhwan <seojunhwan@kakao.com>",
   "license": "MIT",
diff --git a/src/index.ts b/src/index.ts
index 106fcba..af9a296 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -30,7 +30,13 @@ export function preserveDirectivesPlugin(options: DirectivePreservationOptions):
 
         const foundDirectives = lines
           .slice(0, 5)
-          .filter((line) => directives.some((directive) => line.trim().startsWith(`"${directive}"`)));
+          .filter((line) =>
+            directives.some(
+              (directive) =>
+                line.trim().startsWith(`"${directive}"`) ||
+                line.trim().startsWith(`'${directive}'`)
+            )
+          );
 
         if (foundDirectives.length > 0) {
           const relativePath = getRelativePath(args.path);