diff --git a/asset-transfer-private-data/chaincode-java/build.gradle b/asset-transfer-private-data/chaincode-java/build.gradle
index 1aac92b5..45a25c7f 100644
--- a/asset-transfer-private-data/chaincode-java/build.gradle
+++ b/asset-transfer-private-data/chaincode-java/build.gradle
@@ -20,6 +20,7 @@ dependencies {
     testImplementation 'org.junit.jupiter:junit-jupiter:5.4.2'
     testImplementation 'org.assertj:assertj-core:3.11.1'
     testImplementation 'org.mockito:mockito-core:2.+'
+    compile group: 'org.json', name: 'json', version: '20180813'
 }
 
 repositories {