diff --git a/README.md b/README.md
index 6a0cf4f9..9024892d 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,5 @@
 # Fast DDS-Gen
 
-<!-- TODO(eduponz): Remove this before releasing v4.0.0 -->
-> [!WARNING]
-> **In preparation for v3.0.0, Fast DDS' master branch is undergoing major changes entailing API breaks.**
-> **Because of this, Fast DDS Gen is preparing for a v4.0.0 release that will be compatible with Fast DDS v3.0.0.**
-> **Until Fast DDS v3.0.0 and Fast DDS Gen v4.0.0 are released, it is strongly advisable to use the latest stable branches, i.e. [Fast DDS 2.14.x](https://github.com/eProsima/Fast-DDS/tree/2.14.x) and [Fast DDS Gen 3.3.x](https://github.com/eProsima/Fast-DDS-Gen/tree/3.3.x)**.
-
 *eProsima Fast DDS-Gen* is a Java tool to generate TypeSupport code compatible with [*eProsima Fast DDS*](https://github.com/eProsima/Fast-DDS) library.
 
 ## Installation manual
diff --git a/build.gradle b/build.gradle
index cc63d340..887c7960 100644
--- a/build.gradle
+++ b/build.gradle
@@ -17,7 +17,7 @@ apply plugin: 'java-library'
 apply plugin: 'eclipse' // Eclipse integration
 
 description = """"""
-def version_str = "3.3.0"
+def version_str = "4.0.0"
 
 import org.apache.tools.ant.taskdefs.condition.Os;
 import org.gradle.api.tasks.options.Option;
@@ -91,7 +91,7 @@ repositories {
 }
 
 dependencies {
-    implementation files('thirdparty/idl-parser/build/libs/idlparser-3.0.0.jar')
+    implementation files('thirdparty/idl-parser/build/libs/idlparser-4.0.0.jar')
     testImplementation('org.junit.jupiter:junit-jupiter-api:5.5.2')
     testRuntimeOnly('org.junit.jupiter:junit-jupiter-engine:5.5.2')
 }
diff --git a/thirdparty/idl-parser b/thirdparty/idl-parser
index 0e8ce7ee..1e39d944 160000
--- a/thirdparty/idl-parser
+++ b/thirdparty/idl-parser
@@ -1 +1 @@
-Subproject commit 0e8ce7ee38ffa9bca1faabf7ba866f7fcdd74c09
+Subproject commit 1e39d944b7ed1bed06e056abdcc1b41ff3b9cf73