diff --git a/mustang/pom.xml b/mustang/pom.xml
index cbe62a6d..ff8f23e1 100644
--- a/mustang/pom.xml
+++ b/mustang/pom.xml
@@ -3,12 +3,12 @@
     <parent>
         <groupId>com.github.rayman2200</groupId>
         <artifactId>mustang-sample-project</artifactId>
-        <version>1.3.0-SNAPSHOT</version>
+        <version>1.3.0</version>
     </parent>
 
     <groupId>org.mustangproject.ZUGFeRD</groupId>
     <artifactId>mustang</artifactId>
-    <version>1.3.0-SNAPSHOT</version>
+    <version>1.3.0</version>
     <packaging>jar</packaging>
 
     <name>Mustang</name>
@@ -68,4 +68,8 @@
         </developer>
     </developers>
 
+
+  <scm>
+    <tag>mustang-1.3.0</tag>
+  </scm>
 </project>
diff --git a/mustang/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java b/mustang/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
index 6c45ebe7..31bb2f9d 100644
--- a/mustang/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
+++ b/mustang/src/main/java/org/mustangproject/ZUGFeRD/ZUGFeRDExporter.java
@@ -381,7 +381,13 @@ public class ZUGFeRDExporter {
 		return getA1ParserValidationResult(parser);
 	}
 
+	/***
+	 * Will return a boolean if the inputstream is valid PDF/A-1 and close the input stream
+	 * @param file
+	 * @return
+	 */
 	public boolean isValidA1(InputStream file) {
+		
 		ByteArrayDataSource fd;
 		try {
 			fd = new ByteArrayDataSource(file);
@@ -439,11 +445,22 @@ public class ZUGFeRDExporter {
 	public PDDocumentCatalog PDFmakeA3compliant(InputStream file,
 			String producer, String creator, boolean attachZugferdHeaders)
 			throws IOException, TransformerException {
+		/* cache the file content in memory, unfortunately the next step, isValidA1,
+		 * will close the input stream but the step thereafter (loadPDFA3) needs
+		 * and open one*/
+		ByteArrayOutputStream baos = new ByteArrayOutputStream();
+		byte[] buf = new byte[1024];
+		int n = 0;
+		while ((n = file.read(buf)) >= 0)
+		    baos.write(buf, 0, n);
+		byte[] content = baos.toByteArray();
 
-		if (!ignoreA1Errors && !isValidA1(file)) {
+		InputStream is1 = new ByteArrayInputStream(content);
+		if (!ignoreA1Errors && !isValidA1(is1)) {
 			throw new IOException("File is not a valid PDF/A-1 input file");
 		}
-		loadPDFA3(file);
+		InputStream is2 = new ByteArrayInputStream(content);
+		loadPDFA3(is2);
 
 		return makeDocPDFA3compliant(producer, creator, attachZugferdHeaders);
 	}	
diff --git a/pom.xml b/pom.xml
index 5bb6a839..14c84c9c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,14 +2,14 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.github.rayman2200</groupId>
 	<artifactId>mustang-sample-project</artifactId>
-	<version>1.3.0-SNAPSHOT</version>
+	<version>1.3.0</version>
 	<packaging>pom</packaging>
 
 	<scm>
 		<connection>scm:git:https://github.com/AlexanderSchmidt/PDFA3.git</connection>
 		<developerConnection>scm:git:https://github.com/AlexanderSchmidt/PDFA3.git</developerConnection>
 		<url>https://github.com/AlexanderSchmidt/PDFA3.git</url>
-		<tag>HEAD</tag>
+		<tag>mustang-sample-project-1.3.0</tag>
 	</scm>
 
 	<distributionManagement>