diff --git a/Makefile b/Makefile
index f565634..863aac3 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ TARGET_ALLCAPS = X50NG
 
 VERSION_MAJOR = 1
 VERSION_MINOR = 5
-PATCHLEVEL = 0
+PATCHLEVEL = 1
 
 INSTALL_PREFIX = /usr/local
 INSTALL_BINARY_DIR = "$(INSTALL_PREFIX)"/bin