diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6381e801..c7ac48d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,7 +33,7 @@ set(DS_DESCRIPTION "A GUI for instruments of DreamSourceLab")
 set(DS_VERSION_MAJOR 1)
 set(DS_VERSION_MINOR 3)
 set(DS_VERSION_MICRO 0)
-set(DS_VERSION_STRING  ${DS_VERSION_MAJOR}.${DS_VERSION_MINOR}.${DS_VERSION_MICRO}-dev8 )
+set(DS_VERSION_STRING  ${DS_VERSION_MAJOR}.${DS_VERSION_MINOR}.${DS_VERSION_MICRO}-RC1 )
 
 configure_file (
 	${PROJECT_SOURCE_DIR}/DSView/config.h.in
diff --git a/DSView/config.h b/DSView/config.h
index 64d20279..ef0d3664 100644
--- a/DSView/config.h
+++ b/DSView/config.h
@@ -30,6 +30,6 @@
 #define DS_VERSION_MAJOR 1
 #define DS_VERSION_MINOR 3
 #define DS_VERSION_MICRO 0
-#define DS_VERSION_STRING "1.3.0-dev8"
+#define DS_VERSION_STRING "1.3.0-RC1"
 
 #endif