diff --git a/demo-java/build.gradle b/demo-java/build.gradle
index 7d347de..28eca56 100644
--- a/demo-java/build.gradle
+++ b/demo-java/build.gradle
@@ -4,10 +4,6 @@ plugins {
 
 sourceCompatibility = 1.8
 
-repositories {
-    jcenter()
-}
-
 sourceSets {
     main {
         java {
diff --git a/demo-scala/build.gradle b/demo-scala/build.gradle
index 2bc4aac..721e87f 100644
--- a/demo-scala/build.gradle
+++ b/demo-scala/build.gradle
@@ -3,7 +3,7 @@ plugins {
 }
 
 repositories {
-    jcenter()
+    mavenCentral()
 }
 
 sourceSets {