diff --git a/CHANGES_NEXT_RELEASE b/CHANGES_NEXT_RELEASE
index 39adf46..88ea8a5 100644
--- a/CHANGES_NEXT_RELEASE
+++ b/CHANGES_NEXT_RELEASE
@@ -1 +1,2 @@
+- Add java.lang.* and java.util.* packages (all functions) into Esper (#217)
 - Switch log level to PERSEO_LOG_LEVEL env var if was provided to docker (#178)
diff --git a/perseo-main/src/main/java/com/telefonica/iot/perseo/Utils.java b/perseo-main/src/main/java/com/telefonica/iot/perseo/Utils.java
index 8897f07..7fb2ad9 100644
--- a/perseo-main/src/main/java/com/telefonica/iot/perseo/Utils.java
+++ b/perseo-main/src/main/java/com/telefonica/iot/perseo/Utils.java
@@ -94,6 +94,9 @@ public static synchronized EPRuntime initEPService(ServletContext sc) {
 
             // Add perseo-utils library
             configuration.getCommon().addImport("com.telefonica.iot.perseo.utils.*");
+            // Add Java lang and utils packages
+            configuration.getCommon().addImport("java.lang.*");
+            configuration.getCommon().addImport("java.util.*");
 
             ConfigurationCompiler cfgCpl = configuration.getCompiler();