diff --git a/Cargo.toml b/Cargo.toml
index c1b9f7b8..60229cd9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,7 @@ A simple to use, efficient, and full featured  Command Line Argument Parser
 """
 
 [dependencies]
-bitflags              = "0.7.0"
+bitflags              = "0.8.0"
 vec_map               = "0.6.0"
 unicode-width         = "0.1.4"
 unicode-segmentation  = "1.0.1"