Version 4.2.1.

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 526af2d..1cf379c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@
 cmake_minimum_required(VERSION 3.13)
 
 # Library version
-set(VERSION "4.2.0")
+set(VERSION "4.2.1")
 # API version
 set(SOVERSION "4")
 

mz.h

diff --git a/mz.h b/mz.h
index df8d47f..2aa8830 100644
--- a/mz.h
+++ b/mz.h
@@ -14,8 +14,8 @@
 /***************************************************************************/
 
 /* MZ_VERSION */
-#define MZ_VERSION       ("4.2.0")
-#define MZ_VERSION_BUILD (0x040200)
+#define MZ_VERSION       ("4.2.1")
+#define MZ_VERSION_BUILD (0x040201)
 
 /* MZ_ERROR */
 #define MZ_OK             (0)  /* zlib */