diff --git a/core.d.ts b/core.d.ts
index 102e8343..f2e68582 100644
--- a/core.d.ts
+++ b/core.d.ts
@@ -141,7 +141,8 @@ export type FileExtension =
 	| 'zst'
 	| 'jxl'
 	| 'vcf'
-	| 'jls';
+	| 'jls'
+	| 'pst';
 
 export type MimeType =
 	| 'image/jpeg'
@@ -278,7 +279,8 @@ export type MimeType =
 	| 'model/3mf'
 	| 'image/jxl'
 	| 'application/zstd'
-	| 'image/jls';
+	| 'image/jls'
+	| 'application/vnd.ms-outlook';
 
 export type FileTypeResult = {
 	/**
diff --git a/core.js b/core.js
index 9dc2793d..3a3dfd2a 100644
--- a/core.js
+++ b/core.js
@@ -808,6 +808,13 @@ class FileTypeParser {
 			};
 		}
 
+		if (this.check([0x21, 0x42, 0x44, 0x4E])) {
+			return {
+				ext: 'pst',
+				mime: 'application/vnd.ms-outlook',
+			};
+		}
+
 		// -- 5-byte signatures --
 
 		if (this.check([0x4F, 0x54, 0x54, 0x4F, 0x00])) {
diff --git a/fixture/fixture-sample.pst b/fixture/fixture-sample.pst
new file mode 100644
index 00000000..9ad416ab
Binary files /dev/null and b/fixture/fixture-sample.pst differ
diff --git a/package.json b/package.json
index 97a9d224..5f3212b3 100644
--- a/package.json
+++ b/package.json
@@ -194,7 +194,8 @@
 		"zst",
 		"jxl",
 		"vcf",
-		"jls"
+		"jls",
+		"pst"
 	],
 	"dependencies": {
 		"readable-web-to-node-stream": "^3.0.2",
diff --git a/readme.md b/readme.md
index 61e80b68..24a721e8 100644
--- a/readme.md
+++ b/readme.md
@@ -446,6 +446,7 @@ Returns a `Set<string>` of supported MIME types.
 - [`pptx`](https://en.wikipedia.org/wiki/Office_Open_XML) - Microsoft Powerpoint
 - [`ps`](https://en.wikipedia.org/wiki/Postscript) - Postscript
 - [`psd`](https://en.wikipedia.org/wiki/Adobe_Photoshop#File_format) - Adobe Photoshop document
+- [`pst`](https://en.wikipedia.org/wiki/Personal_Storage_Table) - Personal Storage Table file
 - [`qcp`](https://en.wikipedia.org/wiki/QCP) - Tagged and chunked data
 - [`raf`](https://en.wikipedia.org/wiki/Raw_image_format) - Fujifilm RAW image file
 - [`rar`](https://en.wikipedia.org/wiki/RAR_(file_format)) - Archive file
diff --git a/supported.js b/supported.js
index 341b4a1e..bcbfd264 100644
--- a/supported.js
+++ b/supported.js
@@ -139,6 +139,7 @@ export const extensions = [
 	'jxl',
 	'vcf',
 	'jls',
+	'pst',
 ];
 
 export const mimeTypes = [
@@ -277,4 +278,5 @@ export const mimeTypes = [
 	'image/jxl',
 	'application/zstd',
 	'image/jls',
+	'application/vnd.ms-outlook',
 ];
diff --git a/test.js b/test.js
index d9e18cd7..a96ea34e 100644
--- a/test.js
+++ b/test.js
@@ -235,6 +235,9 @@ const names = {
 		'fixture-hp2',
 		'fixture-hp3',
 	],
+	pst: [
+		'fixture-sample',
+	],
 };
 
 // Define an entry here only if the file type has potential