diff --git a/build.gradle b/build.gradle
index c96d00d..4be920b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -45,8 +45,8 @@ repositories {
 
 
 dependencies {
-    compile "com.graphql-java:graphql-java:15.0"
-    compile "com.squareup.okhttp3:okhttp:3.2.0"
+    compile "com.graphql-java:graphql-java:16.1"
+    compile "com.squareup.okhttp3:okhttp:3.14.9"
 
     testCompile 'org.spockframework:spock-core:1.1-groovy-2.4'
     testCompile 'org.codehaus.groovy:groovy-all:2.4.13'
diff --git a/readme.md b/readme.md
index 7d2bc12..3cb5172 100644
--- a/readme.md
+++ b/readme.md
@@ -11,16 +11,26 @@ You would use custom scalars when you want to describe more meaningful behavior
 
 To use this library put the following into your gradle config
 
-    compile 'com.graphql-java:graphql-java-extended-scalars:1.0'
+    compile 'com.graphql-java:graphql-java-extended-scalars:16.0.0'
     
 or the following into your Maven config
 
     <dependency>
       <groupId>com.graphql-java</groupId>
       <artifactId>graphql-java-extended-scalars</artifactId>
-      <version>1.0</version>
+      <version>16.0.0</version>
     </dependency>
-    
+
+> Note:
+>
+> use 1.0.1 or above for graphql-java 14.x and above
+>
+> use 15.0.0 or above for graphql-java 15.x and above
+>
+> use 16.0.0 or above for graphql-java 16.x and above
+
+Its currently available from JCenter repo and Maven central.
+
 Then register the scalar with graphql-java
 
     RuntimeWiring.newRuntimeWiring().scalar(ExtendedScalars.DateTime)