diff --git a/ctfcli/core/challenge.py b/ctfcli/core/challenge.py
index 517f550..a20c8a5 100644
--- a/ctfcli/core/challenge.py
+++ b/ctfcli/core/challenge.py
@@ -736,8 +736,10 @@ def sync(self, ignore: Tuple[str] = ()) -> None:
                         ) as lf:
                             local_file_sha1sum = hash_file(lf)
 
-                        if local_file_sha1sum == remote_file_sha1sum:
-                            continue
+                        # Allow users to specify sha1sum in ignore to force reuploads
+                        if "sha1sum" not in ignore:
+                            if local_file_sha1sum == remote_file_sha1sum:
+                                continue
 
                     # if sha1sums are not present, or the hashes are different, re-upload the file
                     self._delete_file(remote_files[local_file_name]["location"])