diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/asm/ClassMetadataReader.java b/LaunchServer/src/main/java/ru/gravit/launchserver/asm/ClassMetadataReader.java
index c1f07859..30ab1870 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/asm/ClassMetadataReader.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/asm/ClassMetadataReader.java
@@ -1,5 +1,6 @@
 package ru.gravit.launchserver.asm;
 
+import java.io.Closeable;
 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
@@ -17,7 +18,7 @@
  * Позволяет искать методы внутри незагруженных классов и общие суперклассы для
  * чего угодно. Работает через поиск class-файлов в classpath.
  */
-public class ClassMetadataReader {
+public class ClassMetadataReader implements Closeable {
     private class CheckSuperClassVisitor extends ClassVisitor {
 
         String superClassName;
@@ -96,4 +97,9 @@ public ArrayList<String> getSuperClasses(String type) {
         return superclasses;
     }
 
+	@Override
+	public void close() throws IOException {
+		cp.stream().forEach(IOHelper::close);		
+	}
+
 }
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
index ecae496b..a0caa387 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
@@ -47,7 +47,7 @@ public void build() throws IOException {
             long time_task_end = System.currentTimeMillis();
             long time_task = time_task_end - time_this;
             time_this = time_task_end;
-            if(isNeedDelete) Files.delete(oldPath);
+            if (isNeedDelete) Files.delete(oldPath);
             isNeedDelete = task.allowDelete();
             LogHelper.subInfo("Task %s processed from %d millis",task.getName(), time_task);
         }
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/MainBuildTask.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/MainBuildTask.java
index d89e4052..27d7f654 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/MainBuildTask.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/MainBuildTask.java
@@ -195,6 +195,7 @@ public Path process(Path cleanJar) throws IOException {
         } catch (CannotCompileException | NotFoundException e) {
             LogHelper.error(e);
         }
+        reader.close();
         return binaryFile;
     }
 
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/StripLineNumbersTask.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/StripLineNumbersTask.java
index b14d36a6..f6b9be68 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/StripLineNumbersTask.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/tasks/StripLineNumbersTask.java
@@ -53,6 +53,7 @@ public Path process(Path inputFile) throws IOException {
                 e = input.getNextEntry();
             }
         }
+		reader.close();
 		return out;
 	}