diff --git a/VERSION b/VERSION
index 91e4a9f26..7849b73dc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.3.2
+6.3.3
diff --git a/doc/doxygen.cfg b/doc/doxygen.cfg
index ac1b24d1c..c801f0c04 100644
--- a/doc/doxygen.cfg
+++ b/doc/doxygen.cfg
@@ -38,7 +38,7 @@ PROJECT_NAME           = "SIRIUS"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = "6.3.1"
+PROJECT_NUMBER         = "6.3.3"
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a