diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d209be91..b6af9b804 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## [5.0.43] - 2023-09-13
+
+* added a new spectrum binning functionality (see a menu setting _*Preferences*_ / _*spectrum binning*_)
+
 ## [5.0.42] - 2023-09-11
 
 * fixed a long-standing "_*disappearing menu*_" issue in Firefox (worked around a Firefox CSS hover bug)
diff --git a/src/version.h b/src/version.h
index 79839d525..070c548b5 100644
--- a/src/version.h
+++ b/src/version.h
@@ -2,7 +2,7 @@
 
 #define VERSION_MAJOR 5
 #define VERSION_MINOR 0
-#define VERSION_SUB 42
+#define VERSION_SUB 43
 
 #define STR_HELPER(x) #x
 #define STR(x) STR_HELPER(x)
@@ -12,4 +12,4 @@
         VERSION_SUB)
 
 #define WASM_VERSION "23.07.31.0"
-#define VERSION_STRING "F/SV2023-09-11.0-BETA"
\ No newline at end of file
+#define VERSION_STRING "F/SV2023-09-13.0-BETA"
\ No newline at end of file