diff --git a/Cargo.toml b/Cargo.toml
index db86065..799d63d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "msal"
 description = "Microsoft Authentication Library for Rust"
-version = "0.1.20"
+version = "0.1.21"
 edition = "2021"
 authors = [
     "David Mulder <dmulder@suse.com>"
diff --git a/src/error.rs b/src/error.rs
index d8ec515..6286d52 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -7,6 +7,7 @@ pub const NO_CONSENT: u32 = 0xFDE9;
 pub const NO_GROUP_CONSENT: u32 = 0xFDEA;
 pub const NO_SECRET: u32 = 0x6AD09A;
 pub const AUTH_PENDING: u32 = 0x11180;
+pub const DEVICE_AUTH_FAIL: u32 = 0xC3EB;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ErrorResponse {