diff --git a/Doc/doxygen/DoxyfileOpenBLT b/Doc/doxygen/DoxyfileOpenBLT
index 639cd69e..629476e6 100644
--- a/Doc/doxygen/DoxyfileOpenBLT
+++ b/Doc/doxygen/DoxyfileOpenBLT
@@ -38,7 +38,7 @@ PROJECT_NAME           = "OpenBLT Bootloader - Reference Manual"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.3.2
+PROJECT_NUMBER         = 1.4.0
 
 # 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
diff --git a/Target/Source/boot.h b/Target/Source/boot.h
index 8a6999f4..357f11a3 100644
--- a/Target/Source/boot.h
+++ b/Target/Source/boot.h
@@ -34,9 +34,9 @@
 /** \brief Main version number of the bootloader core. */
 #define BOOT_VERSION_CORE_MAIN     (1u)
 /** \brief Minor version number of the bootloader core. */
-#define BOOT_VERSION_CORE_MINOR    (3u)
+#define BOOT_VERSION_CORE_MINOR    (4u)
 /** \brief Patch number of the bootloader core. */
-#define BOOT_VERSION_CORE_BUILD    (2u)
+#define BOOT_VERSION_CORE_BUILD    (0u)
 
 
 /****************************************************************************************