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-rw-r--r--ext/md5/md5init.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/md5/md5init.c b/ext/md5/md5init.c
index 64bba9dab3..d6a4a55535 100644
--- a/ext/md5/md5init.c
+++ b/ext/md5/md5init.c
@@ -103,6 +103,7 @@ Init_md5()
rb_define_singleton_method(cMD5, "md5", md5i_new, -1);
rb_define_method(cMD5, "update", md5i_update, 1);
+ rb_define_method(cMD5, "<<", md5i_update, 1);
rb_define_method(cMD5, "digest", md5i_digest, 0);
rb_define_method(cMD5, "hexdigest", md5i_hexdigest, 0);
rb_define_method(cMD5, "clone", md5i_clone, 0);