diff --git a/weaver/samples/corda/corda-simple-application/contracts-kotlin/build.gradle b/weaver/samples/corda/corda-simple-application/contracts-kotlin/build.gradle
index e50cc3b129..093abfaba5 100644
--- a/weaver/samples/corda/corda-simple-application/contracts-kotlin/build.gradle
+++ b/weaver/samples/corda/corda-simple-application/contracts-kotlin/build.gradle
@@ -23,7 +23,7 @@ dependencies {
 
     testCompile "$corda_release_group:corda-node-driver:$corda_release_version"
     
-    implementation(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-contracts', version: "$cacti_version")
+    compileOnly(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-contracts', version: "$cacti_version")
 }
 
 publishing {
diff --git a/weaver/samples/corda/corda-simple-application/workflows-kotlin/build.gradle b/weaver/samples/corda/corda-simple-application/workflows-kotlin/build.gradle
index 94d3a398b1..fd9d7444d9 100644
--- a/weaver/samples/corda/corda-simple-application/workflows-kotlin/build.gradle
+++ b/weaver/samples/corda/corda-simple-application/workflows-kotlin/build.gradle
@@ -41,8 +41,8 @@ configurations {
 
 dependencies {
     compile 'com.google.code.gson:gson:2.8.6'
-    implementation(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-contracts', version: "$cacti_version")
-    implementation(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-workflows', version: "$cacti_version")
+    compileOnly(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-contracts', version: "$cacti_version")
+    compileOnly(group: 'org.hyperledger.cacti.weaver.imodule.corda', name: 'interop-workflows', version: "$cacti_version")
 
     compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
     compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"