build.gradle in embulk-input-ftp-0.1.4 vs build.gradle in embulk-input-ftp-0.1.5

@@ -11,10 +11,13 @@
 }
 configurations {
     provided
 }
 
-version = "0.1.4"
+sourceCompatibility = 1.7
+targetCompatibility = 1.7
+
+version = "0.1.5"
 
 dependencies {
     compile  "org.embulk:embulk-core:0.7.0"
     provided "org.embulk:embulk-core:0.7.0"
     compile files("libs/ftp4j-1.7.2.jar")