diff --git a/kafka-source/build.gradle b/kafka-source/build.gradle
index ecef4aa..d04a121 100644
--- a/kafka-source/build.gradle
+++ b/kafka-source/build.gradle
@@ -6,7 +6,7 @@ sourceCompatibility = 1.7
 version = '1.0'
 
 repositories {
-    mavenCentral()
+    maven { url 'https://repo.maven.apache.org/maven2/' }
 }
 
 ext {
diff --git a/payload-conversion/gradle/wrapper/gradle-wrapper.properties b/payload-conversion/gradle/wrapper/gradle-wrapper.properties
index 152cc6e..5997054 100644
--- a/payload-conversion/gradle/wrapper/gradle-wrapper.properties
+++ b/payload-conversion/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.11-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-1.11-bin.zip
diff --git a/sample-modules-parent/build.gradle b/sample-modules-parent/build.gradle
index fdcfba5..f9c85a2 100644
--- a/sample-modules-parent/build.gradle
+++ b/sample-modules-parent/build.gradle
@@ -18,8 +18,8 @@ version = '1.0.0.BUILD-SNAPSHOT'
 
 repositories {
     maven { url "http://repo.spring.io/release" }
-    mavenCentral()
-    jcenter()
+    maven { url 'https://repo.maven.apache.org/maven2/' }
+    maven { url 'https://jcenter.bintray.com/' }
     maven { url "http://repo.spring.io/snapshot" }
     maven { url "http://repo.spring.io/milestone" }
 }
diff --git a/sample-modules-parent/buildscript.gradle b/sample-modules-parent/buildscript.gradle
index 91ccfd9..64288c9 100644
--- a/sample-modules-parent/buildscript.gradle
+++ b/sample-modules-parent/buildscript.gradle
@@ -5,7 +5,7 @@
         maven { url "http://repo.spring.io/release" }
         maven { url "http://repo.spring.io/milestone" }
         maven { url "http://repo.spring.io/snapshot" }
-        jcenter()
+        maven { url 'https://jcenter.bintray.com/' }
     }
     dependencies {
 		classpath("org.springframework.xd:spring-xd-module-plugin:1.3.1.RELEASE")
diff --git a/spark-streaming-logger-java-sink/build.gradle b/spark-streaming-logger-java-sink/build.gradle
index 4f800d1..1332588 100644
--- a/spark-streaming-logger-java-sink/build.gradle
+++ b/spark-streaming-logger-java-sink/build.gradle
@@ -13,7 +13,7 @@ configurations {
 }
 
 repositories {
-	mavenCentral()
+	maven { url 'https://repo.maven.apache.org/maven2/' }
 	maven { url 'http://repo.spring.io/release' }	
 }
 
diff --git a/spark-streaming-logger-scala-sink/build.gradle b/spark-streaming-logger-scala-sink/build.gradle
index b59189e..0e5aa35 100644
--- a/spark-streaming-logger-scala-sink/build.gradle
+++ b/spark-streaming-logger-scala-sink/build.gradle
@@ -16,7 +16,7 @@ configurations {
 }
 
 repositories {
-	mavenCentral()
+	maven { url 'https://repo.maven.apache.org/maven2/' }
 	maven { url 'http://repo.spring.io/release' }	
 }
 
diff --git a/spark-streaming-wordcount-java-processor/build.gradle b/spark-streaming-wordcount-java-processor/build.gradle
index 6760b82..1e3e2fc 100644
--- a/spark-streaming-wordcount-java-processor/build.gradle
+++ b/spark-streaming-wordcount-java-processor/build.gradle
@@ -13,7 +13,7 @@ configurations {
 }
 
 repositories {
-	mavenCentral()
+	maven { url 'https://repo.maven.apache.org/maven2/' }
 	maven { url 'http://repo.spring.io/release' }	
 }
 
diff --git a/spark-streaming-wordcount-scala-processor/build.gradle b/spark-streaming-wordcount-scala-processor/build.gradle
index b59189e..0e5aa35 100644
--- a/spark-streaming-wordcount-scala-processor/build.gradle
+++ b/spark-streaming-wordcount-scala-processor/build.gradle
@@ -16,7 +16,7 @@ configurations {
 }
 
 repositories {
-	mavenCentral()
+	maven { url 'https://repo.maven.apache.org/maven2/' }
 	maven { url 'http://repo.spring.io/release' }	
 }
 
diff --git a/tweet-transformer-processor/build.gradle b/tweet-transformer-processor/build.gradle
index e5685bf..1520cf3 100644
--- a/tweet-transformer-processor/build.gradle
+++ b/tweet-transformer-processor/build.gradle
@@ -41,8 +41,8 @@ task wrapper(type: Wrapper) {
 
 repositories {
 	maven { url "http://repo.spring.io/release" }	
-	mavenCentral()
-	jcenter()
+	maven { url 'https://repo.maven.apache.org/maven2/' }
+	maven { url 'https://jcenter.bintray.com/' }
 	maven { url "http://repo.spring.io/snapshot" }
 	maven { url "http://repo.spring.io/milestone" }
 }