diff --git a/CMakeLists.txt b/CMakeLists.txt
index cbe9593..6e2c31b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.18)
 
-set(XMIPP_CORE_REPO_REF "tags/v4.0.0" CACHE STRING "Xmipp Core's repository commit to be fetched")
-set(XMIPP3_REPO_REF "tags/v5.0.0-Beta-gal" CACHE STRING "Xmipp3's repository commit to be fetched")
+set(XMIPP_CORE_REPO_REF "tags/v4.1.0" CACHE STRING "Xmipp Core's repository commit to be fetched")
+set(XMIPP3_REPO_REF "tags/v6.0.0-Cas9" CACHE STRING "Xmipp3's repository commit to be fetched")
 
 # Define the project
 file(READ ${CMAKE_CURRENT_SOURCE_DIR}/VERSION PROJECT_VERSION)
diff --git a/VERSION b/VERSION
index 0d91a54..1d0ba9e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.3.0
+0.4.0