diff --git a/README.md b/README.md
index 567b418..6f3a55d 100644
--- a/README.md
+++ b/README.md
@@ -196,6 +196,7 @@ an integer value build from the bit flags:
   * `8` (`1<<3`) - verify against custom intermediate CAs in the file specified
   by `--ca-inter`
   * `16` (`1<<4`) - verify against certificate revocation list
+  * `32` (`1<<5`) - verify time validity only (not expired and not before validity date)
 
 The value can be combined, so `--cert-verify 7` means that the verification is
 done against system room CAs and the custom CAs in the file specified by `--ca-file`,