diff --git a/configure.ac b/configure.ac
index 6940d18..f51533e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -187,6 +187,11 @@ AC_SUBST(YKPIV_VERSION_MINOR, `echo $PACKAGE_VERSION | sed 's/.*\.\(.*\)\..*/\1/
 AC_SUBST(YKPIV_VERSION_PATCH, `echo $PACKAGE_VERSION | sed 's/.*\..*\.\(.*\)/\1/g'`)
 AC_SUBST(YKPIV_VERSION_NUMBER, `printf "0x%02x%02x%02x" $YKPIV_VERSION_MAJOR $YKPIV_VERSION_MINOR $YKPIV_VERSION_PATCH`)
 
+AC_SUBST(YKCS11_VERSION_MAJOR, `echo $PACKAGE_VERSION | sed 's/\(.*\)\..*\..*/\1/g'`)
+AC_SUBST(YKCS11_VERSION_MINOR, `echo $PACKAGE_VERSION | sed 's/.*\.\(.*\)\..*/\1/g'`)
+AC_SUBST(YKCS11_VERSION_PATCH, `echo $PACKAGE_VERSION | sed 's/.*\..*\.\(.*\)/\1/g'`)
+AC_SUBST(YKCS11_VERSION_NUMBER, `printf "0x%02x%02x%02x" $YKCS11_VERSION_MAJOR $YKCS11_VERSION_MINOR $YKCS11_VERSION_PATCH`)
+
 AC_CONFIG_FILES([
   Makefile
   lib/Makefile