diff --git a/doc/man/s3fs.1.in b/doc/man/s3fs.1.in
index 638088e..763e84e 100644
--- a/doc/man/s3fs.1.in
+++ b/doc/man/s3fs.1.in
@@ -85,7 +85,7 @@ delete local file cache when s3fs starts and exits.
 .TP
 \fB\-o\fR storage_class (default="standard")
 store object with specified storage class.
-Possible values: standard, standard_ia, onezone_ia, reduced_redundancy, intelligent_tiering, glacier, and deep_archive.
+Possible values: standard, standard_ia, onezone_ia, reduced_redundancy, intelligent_tiering, glacier, glacier_ir, and deep_archive.
 .TP
 \fB\-o\fR use_rrs (default is disable)
 use Amazon's Reduced Redundancy Storage.
diff --git a/src/s3fs_help.cpp b/src/s3fs_help.cpp
index 583f872..c8f6d11 100644
--- a/src/s3fs_help.cpp
+++ b/src/s3fs_help.cpp
@@ -87,7 +87,7 @@ static const char help_string[] =
     "   storage_class (default=\"standard\")\n"
     "      - store object with specified storage class. Possible values:\n"
     "        standard, standard_ia, onezone_ia, reduced_redundancy,\n"
-    "        intelligent_tiering, glacier, and deep_archive.\n"
+    "        intelligent_tiering, glacier, glacier_ir, and deep_archive.\n"
     "\n"
     "   use_rrs (default is disable)\n"
     "      - use Amazon's Reduced Redundancy Storage.\n"