ext/digest/crc32/crc32_ext.c in digest-crc-0.6.4 vs ext/digest/crc32/crc32_ext.c in digest-crc-0.6.5

@@ -21,8 +21,12 @@
 void Init_crc32_ext()
 {
 	VALUE mDigest = rb_const_get(rb_cObject, rb_intern("Digest"));
 	VALUE cCRC32 = rb_const_get(mDigest, rb_intern("CRC32"));
 
+	#ifdef HAVE_RB_EXT_RACTOR_SAFE
+		rb_ext_ractor_safe(true);
+	#endif
+
 	rb_undef_method(cCRC32, "update");
 	rb_define_method(cCRC32, "update", Digest_CRC32_update, 1);
 }