diff --git a/ts/semaphore.ts b/ts/semaphore.ts
index 1a92b1a..2993098 100644
--- a/ts/semaphore.ts
+++ b/ts/semaphore.ts
@@ -133,11 +133,19 @@ export class Semaphore {
 		
 		let lock: SemaphoreLock = await this.getLock();
 		
-		let result: T = await operation();
-		
-		lock.release();
-		
-		return result;
+		try {
+
+			return await operation();
+			
+		} catch (error: any) {
+			
+			throw error;
+			
+		} finally {
+			
+			lock.release();
+			
+		}
 		
 	}