diff --git a/README.md b/README.md
index b346b42..806cab4 100644
--- a/README.md
+++ b/README.md
@@ -91,6 +91,7 @@ docker run -d \
 | GIT_SYNC_SUBMODULES             | `--submodules`             | git submodule behavior: one of 'recursive', 'shallow', or 'off'                                                                                                                                                                               | recursive                     |
 | GIT_SYNC_ROOT                   | `--root`                   | the root directory for git-sync operations, under which --link will be created                                                                                                                                                                | ""                            |
 | GIT_SYNC_LINK                   | `--link`                   | the name of a symlink, under --root, which points to a directory in which --repo is checked out (defaults to the leaf dir of --repo)                                                                                                          | ""                            |
+| GIT_SYNC_ERROR_FILE             | `--error-file`             | the name of a file, under --root, into which errors will be written (defaults to "", disabling error reporting)                                                                                                  | ""                            |
 | GIT_SYNC_PERIOD                 | `--period`                 | how long to wait between syncs, must be >= 10ms                                                                                                                                                                                               | "10s"                         |
 | GIT_SYNC_SYNC_TIMEOUT           | `--sync-timeout`           | the total time allowed for one complete sync, must be >= 10ms                                                                                                                                                                                 | "120s"                        |
 | GIT_SYNC_ONE_TIME               | `--one-time`               | exit after the first sync                                                                                                                                                                                                                     | false                         |
diff --git a/cmd/git-sync/main.go b/cmd/git-sync/main.go
index a8c7db5..26d35b2 100644
--- a/cmd/git-sync/main.go
+++ b/cmd/git-sync/main.go
@@ -1517,6 +1517,12 @@ OPTIONS
             Use a git cookiefile (/etc/git-secret/cookie_file) for
             authentication.
 
+    --error-file, $GIT_SYNC_ERROR_FILE
+            The name of a file (under --root) into which errors will be
+            written. This must be a filename, not a path, and may not start
+            with a period. (default: "", which means error reporting will be
+            disabled)
+
     --depth <int>, $GIT_SYNC_DEPTH
             Create a shallow clone with history truncated to the specified
             number of commits.
@@ -1576,7 +1582,7 @@ OPTIONS
 
     --period <duration>, $GIT_SYNC_PERIOD
             How long to wait between sync attempts.  This must be at least
-            10ms.  This flag obsoletes --wait, but if --wait is specifed, it
+            10ms.  This flag obsoletes --wait, but if --wait is specified, it
             will take precedence. (default: 10s)
 
     --repo <string>, $GIT_SYNC_REPO