diff --git a/library/build.gradle b/library/build.gradle
index 99395cfe..d7888751 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -4,7 +4,7 @@ apply plugin: 'signing'
 apply plugin: 'checkstyle'
 
 group 'com.anjlab.android.iab.v3'
-version '1.0.38'
+version '1.0.39'
 
 android {
     compileSdkVersion 23
diff --git a/sample/libs/anjlab-iabv3-current.jar b/sample/libs/anjlab-iabv3-current.jar
index 78cd954d..25f643f5 100644
Binary files a/sample/libs/anjlab-iabv3-current.jar and b/sample/libs/anjlab-iabv3-current.jar differ