diff --git a/framework_lib/src/ccgx/mod.rs b/framework_lib/src/ccgx/mod.rs
index 185d103..71f187b 100644
--- a/framework_lib/src/ccgx/mod.rs
+++ b/framework_lib/src/ccgx/mod.rs
@@ -121,7 +121,7 @@ impl fmt::Display for BaseVersion {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(
             f,
-            "{}.{}.{}.{:0>3}",
+            "{:X}.{:X}.{:X}.{:03X}",
             self.major, self.minor, self.patch, self.build_number
         )
     }
@@ -163,7 +163,7 @@ pub struct AppVersion {
 
 impl fmt::Display for AppVersion {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(f, "{}.{}.{:0>2}", self.major, self.minor, self.circuit)
+        write!(f, "{:X}.{:X}.{:02X}", self.major, self.minor, self.circuit)
     }
 }