diff --git a/varlink-cli/Cargo.toml b/varlink-cli/Cargo.toml
index c1d65c2..dbb119d 100644
--- a/varlink-cli/Cargo.toml
+++ b/varlink-cli/Cargo.toml
@@ -24,4 +24,4 @@ clap = "2.33.0"
 colored_json = "2.1.0"
 chainerror = "0.8.0"
 libc = { version = "0.2.126", default-features = false }
-bitflags = "1.2.1"
+bitflags = "2.4.1"