diff --git a/build.gradle b/build.gradle
index 4c0daa7421..3744cc6c7a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -89,6 +89,7 @@ project.ext.externalDependency = [
     'jgrapht': 'org.jgrapht:jgrapht-core:1.5.1',
     'jsonSchemaAvro': 'com.github.fge:json-schema-avro:0.1.4',
     'jsonSimple': 'com.googlecode.json-simple:json-simple:1.1.1',
+    'jsonSmart': 'net.minidev:json-smart:2.4.6',
     'junitJupiterApi': "org.junit.jupiter:junit-jupiter-api:$junitJupiterVersion",
     'junitJupiterParams': "org.junit.jupiter:junit-jupiter-params:$junitJupiterVersion",
     'junitJupiterEngine': "org.junit.jupiter:junit-jupiter-engine:$junitJupiterVersion",
diff --git a/datahub-frontend/play.gradle b/datahub-frontend/play.gradle
index 94bffe1524..7395dc4038 100644
--- a/datahub-frontend/play.gradle
+++ b/datahub-frontend/play.gradle
@@ -38,7 +38,10 @@ dependencies {
   implementation externalDependency.jerseyCore
   implementation externalDependency.jerseyGuava
 
-  implementation externalDependency.pac4j
+  implementation(externalDependency.pac4j) {
+    exclude group: "net.minidev", module: "json-smart"
+  }
+  implementation externalDependency.jsonSmart
   implementation externalDependency.playPac4j
   implementation externalDependency.shiroCore
   implementation externalDependency.playCache