diff --git a/Software/CHANGELOG b/Software/CHANGELOG
index 0b42a48a..722719ed 100644
--- a/Software/CHANGELOG
+++ b/Software/CHANGELOG
@@ -13,6 +13,14 @@ _/_/_/_/  _/    _/_/_/  _/    _/      _/_/  _/_/_/      _/_/_/    _/_/_/  _/
 #    Software changelog
 ===================================================================================
 
+Version 5.11.2.28
+---------------
+May 20, 2021
+
+* Add multi-instance mode
+* Fix API regression in .27 (#450)
+
+
 Version 5.11.2.27
 ---------------
 December 7, 2020
diff --git a/Software/VERSION b/Software/VERSION
index 32e806a3..df2d420b 100644
--- a/Software/VERSION
+++ b/Software/VERSION
@@ -1 +1 @@
-5.11.2.27
\ No newline at end of file
+5.11.2.28
\ No newline at end of file
diff --git a/Software/src/version.h b/Software/src/version.h
index 0252aa71..4e16fbdf 100644
--- a/Software/src/version.h
+++ b/Software/src/version.h
@@ -27,10 +27,10 @@
 #pragma once
 
 // Current version of Lightpack software
-#define VERSION_STR "5.11.2.27"
+#define VERSION_STR "5.11.2.28"
 
 // Resource defines using in Lightpack.rc
-#define VER_FILEVERSION				5,11,2,27
+#define VER_FILEVERSION				5,11,2,28
 #define VER_PRODUCTVERSION			VER_FILEVERSION
 
 #define VER_FILEVERSION_STR			VERSION_STR "\0"