diff --git a/Makefile b/Makefile
index d0107ed92..fd9cec66c 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ endif
 
 # ABI version
 # http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html
-SONAME=1
+SONAME=6
 
 # To rebuild the Tables generated by Perl and Python scripts (requires Internet
 # access for Unicode data), uncomment the following line: