diff --git a/dd-java-agent/instrumentation/java-concurrent/akka-2.5-testing/src/test/groovy/AkkaExecutorInstrumentationTest.groovy b/dd-java-agent/instrumentation/java-concurrent/akka-2.5-testing/src/test/groovy/AkkaExecutorInstrumentationTest.groovy
index d2e337da5f..5507b6fa7a 100644
--- a/dd-java-agent/instrumentation/java-concurrent/akka-2.5-testing/src/test/groovy/AkkaExecutorInstrumentationTest.groovy
+++ b/dd-java-agent/instrumentation/java-concurrent/akka-2.5-testing/src/test/groovy/AkkaExecutorInstrumentationTest.groovy
@@ -5,6 +5,7 @@ import datadog.opentracing.scopemanager.ContinuableScope
 import datadog.trace.agent.test.AgentTestRunner
 import datadog.trace.api.Trace
 import io.opentracing.util.GlobalTracer
+import spock.lang.Retry
 import spock.lang.Shared
 
 import java.lang.reflect.InvocationTargetException
@@ -19,6 +20,7 @@ import java.util.concurrent.TimeUnit
  * Test executor instrumentation for Akka specific classes.
  * This is to large extent a copy of ExecutorInstrumentationTest.
  */
+@Retry
 class AkkaExecutorInstrumentationTest extends AgentTestRunner {
 
   @Shared
diff --git a/dd-java-agent/instrumentation/java-concurrent/scala-testing/src/test/groovy/ScalaExecutorInstrumentationTest.groovy b/dd-java-agent/instrumentation/java-concurrent/scala-testing/src/test/groovy/ScalaExecutorInstrumentationTest.groovy
index 78780d8fb1..517c2e6c6b 100644
--- a/dd-java-agent/instrumentation/java-concurrent/scala-testing/src/test/groovy/ScalaExecutorInstrumentationTest.groovy
+++ b/dd-java-agent/instrumentation/java-concurrent/scala-testing/src/test/groovy/ScalaExecutorInstrumentationTest.groovy
@@ -5,6 +5,7 @@ import datadog.trace.api.Trace
 import io.opentracing.util.GlobalTracer
 import scala.concurrent.forkjoin.ForkJoinPool
 import scala.concurrent.forkjoin.ForkJoinTask
+import spock.lang.Retry
 import spock.lang.Shared
 
 import java.lang.reflect.InvocationTargetException
@@ -19,6 +20,7 @@ import java.util.concurrent.TimeUnit
  * Test executor instrumentation for Scala specific classes.
  * This is to large extent a copy of ExecutorInstrumentationTest.
  */
+@Retry
 class ScalaExecutorInstrumentationTest extends AgentTestRunner {
 
   @Shared
diff --git a/dd-java-agent/instrumentation/java-concurrent/src/test/groovy/ExecutorInstrumentationTest.groovy b/dd-java-agent/instrumentation/java-concurrent/src/test/groovy/ExecutorInstrumentationTest.groovy
index 2897f02d95..5f7313679a 100644
--- a/dd-java-agent/instrumentation/java-concurrent/src/test/groovy/ExecutorInstrumentationTest.groovy
+++ b/dd-java-agent/instrumentation/java-concurrent/src/test/groovy/ExecutorInstrumentationTest.groovy
@@ -5,6 +5,7 @@ import datadog.trace.api.Trace
 import datadog.trace.bootstrap.instrumentation.java.concurrent.CallableWrapper
 import datadog.trace.bootstrap.instrumentation.java.concurrent.RunnableWrapper
 import io.opentracing.util.GlobalTracer
+import spock.lang.Retry
 import spock.lang.Shared
 
 import java.lang.reflect.InvocationTargetException
@@ -18,6 +19,7 @@ import java.util.concurrent.ScheduledThreadPoolExecutor
 import java.util.concurrent.ThreadPoolExecutor
 import java.util.concurrent.TimeUnit
 
+@Retry
 class ExecutorInstrumentationTest extends AgentTestRunner {
 
   @Shared