diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
index cbabe3a..1431f69 100644
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -19,6 +19,7 @@
 long mch_getperm __ARGS((char_u *name));
 int mch_setperm __ARGS((char_u *name, long perm));
 void mch_hide __ARGS((char_u *name));
+int mch_ishidden __ARGS((char_u *name));
 int mch_isdir __ARGS((char_u *name));
 int mch_mkdir __ARGS((char_u *name));
 int mch_is_hard_link __ARGS((char_u *fname));
diff --git a/src/version.c b/src/version.c
index eb418a7..3792aa0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    921,
+/**/
     920,
 /**/
     919,