diff --git a/PerlMagick/Makefile.PL b/PerlMagick/Makefile.PL
index 1eec236..8178f18 100644
--- a/PerlMagick/Makefile.PL
+++ b/PerlMagick/Makefile.PL
@@ -171,7 +171,7 @@
    'AUTHOR' => 'ImageMagick Studio LLC',
 
    # Module version
-   'VERSION' => '6.6.3',
+   'VERSION' => '6.6.4',
 
    # Preprocessor defines
    'DEFINE'	=> ' -D_LARGE_FILES=1 -DHAVE_CONFIG_H',     # e.g., '-DHAVE_SOMETHING'