diff --git a/Makefile b/Makefile
index 5cc539d..d0107ed 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@
 
 # ABI version
 # http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html
-SONAME=0
+SONAME=1
 
 # To rebuild the Tables generated by Perl and Python scripts (requires Internet
 # access for Unicode data), uncomment the following line: