diff --git a/ChangeLog b/ChangeLog
index da439504b..4c1cd52ed 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,9 @@
 
+-----------------------
+2.13.1 Hot fix
+-----------------------
+Fix for pure white going gray in grayscale transforms.
+
 -----------------------
 2.13 Featured release
 -----------------------
diff --git a/include/lcms2.h b/include/lcms2.h
index 1fab76007..5e0aa33a8 100644
--- a/include/lcms2.h
+++ b/include/lcms2.h
@@ -23,7 +23,7 @@
 //
 //---------------------------------------------------------------------------------
 //
-// Version 2.13
+// Version 2.13.1
 //
 
 #ifndef _lcms2_H
@@ -81,7 +81,7 @@ extern "C" {
 #endif
 
 // Version/release
-#define LCMS_VERSION        2130
+#define LCMS_VERSION        2131
 
 // I will give the chance of redefining basic types for compilers that are not fully C99 compliant
 #ifndef CMS_BASIC_TYPES_ALREADY_DEFINED