diff --git a/Cargo.toml b/Cargo.toml
index 8dceac6..bf61a10 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@ igvm_defs = { path = "igvm_defs", version = "0.4.0" }
 igvm = { path = "igvm", version = "0.4.0" }
 
 anyhow = "1.0"
-bitfield-struct = "0.12"
+bitfield-struct = "0.13"
 corim = { version = "0.1.2", default-features = false }
 crc32fast = { version = "1.3.2", default-features = false }
 hex = { version = "0.4", default-features = false }