diff --git a/lib-bms-protocol/src/lib.rs b/lib-bms-protocol/src/lib.rs
index 0b61641..64a3401 100644
--- a/lib-bms-protocol/src/lib.rs
+++ b/lib-bms-protocol/src/lib.rs
@@ -48,7 +48,7 @@ impl BmsWriteable for BmsSoftwareReset {
 
 #[derive(Debug)]
 #[repr(transparent)]
-pub struct ProtocolVersion(u32);
+pub struct ProtocolVersion(pub u32);
 
 impl BmsReadable for ProtocolVersion {
     fn read_from_i2c<I>(i2c_dev: &mut I) -> Result<Self, BmsProtocolError>
@@ -71,7 +71,7 @@ impl BmsReadable for ProtocolVersion {
 
 #[derive(Debug)]
 #[repr(transparent)]
-pub struct FirmwareVersion(u32);
+pub struct FirmwareVersion(pub u32);
 
 impl BmsReadable for FirmwareVersion {
     fn read_from_i2c<I>(i2c_dev: &mut I) -> Result<Self, BmsProtocolError>