1 files changed, 1 insertions, 0 deletions
diff --git a/hash.h b/hash.h
index f927889c..a71b1ef4 100644
--- a/hash.h
+++ b/hash.h
@@ -55,6 +55,7 @@ val hash_alist(val hash);
 val hash_uni(val hash1, val hash2);
 val hash_diff(val hash1, val hash2);
 val hash_isec(val hash1, val hash2);
+val hash_update(val hash, val fun);
 
 void hash_process_weak(void);