diff --git a/README.md b/README.md
index 055b736..c0f2947 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,9 @@ pom.xml
 // Instantiate tracer
 Tracer tracer = ...
 
+// Optionally register tracer with GlobalTracer
+GlobalTracer.register(tracer);
+
 // Instantiate Cluster Builder
  Cluster.Builder builder = Cluster.builder().addContactPoints("127.0.0.1").withPort(9142);
 
diff --git a/pom.xml b/pom.xml
index f723720..de1bb0b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -62,7 +62,7 @@
 
     <opentracing.version>0.31.0</opentracing.version>
     <coveralls-maven-plugin.version>4.3.0</coveralls-maven-plugin.version>
-    <jacoco-maven-plugin.version>0.8.1</jacoco-maven-plugin.version>
+    <jacoco-maven-plugin.version>0.8.2</jacoco-maven-plugin.version>
     <cassandra.version>3.5.1</cassandra.version>
   </properties>
 
@@ -89,7 +89,7 @@
     <dependency>
       <groupId>org.cassandraunit</groupId>
       <artifactId>cassandra-unit</artifactId>
-      <version>3.3.0.2</version>
+      <version>3.5.0.1</version>
       <scope>test</scope>
       <exclusions>
         <exclusion>
@@ -109,7 +109,7 @@
     <dependency>
       <groupId>org.awaitility</groupId>
       <artifactId>awaitility</artifactId>
-      <version>3.1.0</version>
+      <version>3.1.2</version>
       <scope>test</scope>
     </dependency>
 
@@ -126,7 +126,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.7.0</version>
+        <version>3.8.0</version>
         <configuration>
           <source>${java.version}</source>
           <target>${java.version}</target>
@@ -236,7 +236,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.0.0</version>
+            <version>3.0.1</version>
             <configuration>
               <failOnError>false</failOnError>
             </configuration>
diff --git a/src/main/java/io/opentracing/contrib/cassandra/TracingCluster.java b/src/main/java/io/opentracing/contrib/cassandra/TracingCluster.java
index c0884df..950be4c 100644
--- a/src/main/java/io/opentracing/contrib/cassandra/TracingCluster.java
+++ b/src/main/java/io/opentracing/contrib/cassandra/TracingCluster.java
@@ -21,6 +21,7 @@
 import io.opentracing.Tracer;
 import io.opentracing.contrib.cassandra.nameprovider.CustomStringSpanName;
 import io.opentracing.contrib.cassandra.nameprovider.QuerySpanNameProvider;
+import io.opentracing.util.GlobalTracer;
 
 /**
  * Tracing decorator for {@link Cluster}
@@ -36,12 +37,27 @@ public TracingCluster(Initializer initializer, Tracer tracer) {
     this.querySpanNameProvider = CustomStringSpanName.newBuilder().build("execute");
   }
 
-  public TracingCluster(Initializer initializer, Tracer tracer, QuerySpanNameProvider querySpanNameProvider) {
+  /**
+   * GlobalTracer is used to get tracer
+   */
+  public TracingCluster(Initializer initializer) {
+    this(initializer, GlobalTracer.get());
+  }
+
+  public TracingCluster(Initializer initializer, Tracer tracer,
+      QuerySpanNameProvider querySpanNameProvider) {
     super(initializer);
     this.tracer = tracer;
     this.querySpanNameProvider = querySpanNameProvider;
   }
 
+  /**
+   * GlobalTracer is used to get tracer
+   */
+  public TracingCluster(Initializer initializer, QuerySpanNameProvider querySpanNameProvider) {
+    this(initializer, GlobalTracer.get(), querySpanNameProvider);
+  }
+
   /**
    * {@inheritDoc}
    */
diff --git a/src/test/java/io/opentracing/contrib/cassandra/CassandraMappingTest.java b/src/test/java/io/opentracing/contrib/cassandra/CassandraMappingTest.java
index fd16790..6dcd8bd 100644
--- a/src/test/java/io/opentracing/contrib/cassandra/CassandraMappingTest.java
+++ b/src/test/java/io/opentracing/contrib/cassandra/CassandraMappingTest.java
@@ -45,6 +45,7 @@ public class CassandraMappingTest {
   public void before() throws Exception {
     System.setProperty("java.library.path", "src/test/resources/libs");
     EmbeddedCassandraServerHelper.startEmbeddedCassandra();
+    EmbeddedCassandraServerHelper.getSession();
     Session session = createSession();
     createKeyspace(session);
     createTable(session);
diff --git a/src/test/java/io/opentracing/contrib/cassandra/CassandraTest.java b/src/test/java/io/opentracing/contrib/cassandra/CassandraTest.java
index 51ac1f2..f0358ac 100644
--- a/src/test/java/io/opentracing/contrib/cassandra/CassandraTest.java
+++ b/src/test/java/io/opentracing/contrib/cassandra/CassandraTest.java
@@ -54,6 +54,7 @@ public void before() throws Exception {
     System.setProperty("java.library.path", "src/test/resources/libs");
     mockTracer.reset();
     EmbeddedCassandraServerHelper.startEmbeddedCassandra();
+    EmbeddedCassandraServerHelper.getSession();
   }
 
   @After