diff --git a/src/proto/blob.pro b/src/proto/blob.pro
index dbc8d14..0b1c814 100644
--- a/src/proto/blob.pro
+++ b/src/proto/blob.pro
@@ -18,7 +18,12 @@
 int check_blob_index(long bloblen, varnumber_T n1, int quiet);
 int check_blob_range(long bloblen, varnumber_T n1, varnumber_T n2, int quiet);
 int blob_set_range(blob_T *dest, long n1, long n2, typval_T *src);
+void blob_add(typval_T *argvars, typval_T *rettv);
 void blob_remove(typval_T *argvars, typval_T *rettv, char_u *arg_errmsg);
+void blob_filter_map(blob_T *blob_arg, filtermap_T filtermap, typval_T *expr, typval_T *rettv);
+void blob_insert_func(typval_T *argvars, typval_T *rettv);
+void blob_reduce(typval_T *argvars, char_u *func_name, funcexe_T *funcexe, typval_T *rettv);
+void blob_reverse(blob_T *b, typval_T *rettv);
 void f_blob2list(typval_T *argvars, typval_T *rettv);
 void f_list2blob(typval_T *argvars, typval_T *rettv);
 /* vim: set ft=c : */