diff --git a/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/ZipInflaterInputStream.java b/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/ZipInflaterInputStream.java
index 0678dc2e9f..cdc6974d49 100644
--- a/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/ZipInflaterInputStream.java
+++ b/spring-boot-tools/spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/ZipInflaterInputStream.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2014 the original author or authors.
+ * Copyright 2012-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,12 +30,19 @@ import java.util.zip.InflaterInputStream;
  */
 class ZipInflaterInputStream extends InflaterInputStream {
 
+	private final Inflater inflater;
+
 	private boolean extraBytesWritten;
 
 	private int available;
 
 	ZipInflaterInputStream(InputStream inputStream, int size) {
-		super(inputStream, new Inflater(true), getInflaterBufferSize(size));
+		this(inputStream, new Inflater(true), size);
+	}
+
+	private ZipInflaterInputStream(InputStream inputStream, Inflater inflater, int size) {
+		super(inputStream, inflater, getInflaterBufferSize(size));
+		this.inflater = inflater;
 		this.available = size;
 	}
 
@@ -56,6 +63,12 @@ class ZipInflaterInputStream extends InflaterInputStream {
 		return result;
 	}
 
+	@Override
+	public void close() throws IOException {
+		super.close();
+		this.inflater.end();
+	}
+
 	@Override
 	protected void fill() throws IOException {
 		try {