diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index a5b65ab38..952ed55d3 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -19,7 +19,7 @@
     In case of bug fixes, please provide the list of supported branches where this fix should be also merged.
     Please uncomment following line, adjusting the corresponding target branches for the backport.
 -->
-<!-- @Mergifyio backport 2.14.x 2.10.x 2.6.x -->
+<!-- @Mergifyio backport 3.0.x 2.14.x 2.10.x 2.6.x -->
 
 <!-- If an issue is already opened, please uncomment next line with the corresponding issue number. -->
 <!-- Fixes #(issue) -->
diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index db69de3f5..4e62f78ad 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         dest_branch:
-          - '3.0.x'
+          - '3.1.x'
           - '3.x'
     steps:
     - name: Mirror action step
diff --git a/.github/workflows/nightly-ubuntu-ci.yml b/.github/workflows/nightly-ubuntu-ci.yml
index 21572e35e..8886006b2 100644
--- a/.github/workflows/nightly-ubuntu-ci.yml
+++ b/.github/workflows/nightly-ubuntu-ci.yml
@@ -20,6 +20,20 @@ jobs:
       run-tests: true
       use-ccache: false
 
+  nightly-ubuntu-ci-3_0_x:
+    uses: eProsima/Fast-DDS-docs/.github/workflows/reusable-ubuntu-ci.yml@3.0.x
+    with:
+      # It would be desirable to have a matrix of ubuntu OS for this job, but due to the issue opened in this ticket:
+      # https://github.com/orgs/community/discussions/128118 , it has been set as a single OS job.
+      os-version: 'ubuntu-24.04'
+      label: 'nightly-ubuntu-ci-3.0.x'
+      fastdds-docs-branch: '3.0.x'
+      fastdds-branch: '3.0.x'
+      fastdds-python-branch: '2.0.x'
+      run-build: true
+      run-tests: true
+      use-ccache: false
+
   nightly-ubuntu-ci-2_14_x:
     uses: eProsima/Fast-DDS-docs/.github/workflows/reusable-ubuntu-ci.yml@2.14.x
     with:
diff --git a/docs/conf.py b/docs/conf.py
index e4575eb06..019d7288c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -401,9 +401,9 @@ def configure_doxyfile(
 # built documents.
 #
 # The short X.Y version.
-version = u'3.0.1'
+version = u'3.1.0'
 # The full version, including alpha/beta/rc tags.
-release = u'3.0.1'
+release = u'3.1.0'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.