diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4fbbd06678a..b64e62207f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -75,11 +75,11 @@ endif()
 # To insure consistency please ensure the SAME of the first two values are also
 # assigned to the "VERSION" and "BUILD" variables in the native qmake project
 # file, which is NOW called: ./src/mudlet.pro
-set(APP_VERSION 4.2.0)
+set(APP_VERSION 4.2.1)
 if(DEFINED ENV{MUDLET_VERSION_BUILD} AND NOT $ENV{MUDLET_VERSION_BUILD} STREQUAL "")
   set(APP_BUILD $ENV{MUDLET_VERSION_BUILD})
 else()
-  set(APP_BUILD "-dev")
+  set(APP_BUILD "")
 endif()
 
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${CMAKE_MODULE_PATH})
diff --git a/src/mudlet.pro b/src/mudlet.pro
index f8a2cefa37f..f36a2571461 100644
--- a/src/mudlet.pro
+++ b/src/mudlet.pro
@@ -99,7 +99,7 @@ TEMPLATE = app
 ########################## Version and Build setting ###########################
 # Set the current Mudlet Version, unfortunately the Qt documentation suggests
 # that only a #.#.# form without any other alphanumberic suffixes is required:
-VERSION = 4.2.0
+VERSION = 4.2.1
 
 # if you are distributing modified code, it would be useful if you
 # put something distinguishing into the MUDLET_VERSION_BUILD environment
@@ -109,7 +109,7 @@ BUILD = $$(MUDLET_VERSION_BUILD)
 isEmpty( BUILD ) {
 # Leave the value of the following empty for a release build
 # i.e. the line should be "BUILD =" without quotes
-   BUILD = "-dev"
+   BUILD = ""
 }
 
 # Changing BUILD and VERSION values affects: ctelnet.cpp, main.cpp, mudlet.cpp