diff --git a/lib/otp/Makefile.am b/lib/otp/Makefile.am
index 91c947d66..77f793591 100644
--- a/lib/otp/Makefile.am
+++ b/lib/otp/Makefile.am
@@ -13,7 +13,7 @@ otptest_LDADD = libotp.la
 include_HEADERS = otp.h
 
 lib_LTLIBRARIES = libotp.la
-libotp_la_LDFLAGS = -version-info 1:2:1
+libotp_la_LDFLAGS = -version-info 1:3:1
 libotp_la_LIBADD  = $(LIB_des) $(LIB_roken) $(LIB_NDBM)
 
 libotp_la_SOURCES = \