diff --git a/pom.xml b/pom.xml
index 2336c13..c00ca73 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>hk.ust.bioinformatics</groupId>
     <artifactId>ECL2</artifactId>
-    <version>2.1.4</version>
+    <version>2.1.5</version>
     <packaging>jar</packaging>
 
     <name>ECL2</name>
diff --git a/src/main/java/proteomics/ECL2.java b/src/main/java/proteomics/ECL2.java
index 51c9a09..b5dc4bd 100644
--- a/src/main/java/proteomics/ECL2.java
+++ b/src/main/java/proteomics/ECL2.java
@@ -26,7 +26,7 @@ public class ECL2 {
     public static final int score_point_t = 15000;
 
     private static final Logger logger = LoggerFactory.getLogger(ECL2.class);
-    public static final String version = "2.1.4";
+    public static final String version = "2.1.5";
 
     public static boolean debug;
     public static boolean dev;
diff --git a/src/main/resources/parameter.def b/src/main/resources/parameter.def
index a508a61..f59233c 100644
--- a/src/main/resources/parameter.def
+++ b/src/main/resources/parameter.def
@@ -1,4 +1,4 @@
-# 2.1.4
+# 2.1.5
 # The first line is the parameter file version. Do not change it.
 thread_num = 0
 debug = 0