diff --git a/Makefile.am b/Makefile.am
index 86f3409..ff0df21 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -81,7 +81,7 @@ pkginclude_HEADERS += $(lib_headers)
 lib_LTLIBRARIES += lib/libbluetooth.la
 
 lib_libbluetooth_la_SOURCES = $(lib_headers) $(lib_sources)
-lib_libbluetooth_la_LDFLAGS = $(AM_LDFLAGS) -version-info 22:3:19
+lib_libbluetooth_la_LDFLAGS = $(AM_LDFLAGS) -version-info 22:4:19
 lib_libbluetooth_la_DEPENDENCIES = $(local_headers)
 endif