diff --git a/Cargo.lock b/Cargo.lock
index 203e868..ae8fe3e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1521,7 +1521,7 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "sign-firmware"
-version = "0.1.12"
+version = "0.1.13"
 dependencies = [
  "anyhow",
  "async-io",
diff --git a/Cargo.toml b/Cargo.toml
index 5c362f8..4d5f002 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sign-firmware"
-version = "0.1.12"
+version = "0.1.13"
 authors = ["Jack Hogan <jackhogan11@gmail.com>"]
 edition = "2021"
 license = "MIT OR Apache-2.0"
diff --git a/src/printer.rs b/src/printer.rs
index c33bc24..9146c8a 100644
--- a/src/printer.rs
+++ b/src/printer.rs
@@ -54,12 +54,12 @@ impl PrinterEvent {
                 PrinterInstruction::PrintCut,
             ],
             PrinterEvent::NewBolt(b) => vec![
-                PrinterInstruction::Text(format!("Lightning strikes! It is now bolt {b}")),
+                PrinterInstruction::Text(format!("Lightning strikes! It is now bolt {b:x}")),
                 PrinterInstruction::PrintCut,
             ],
             PrinterEvent::NewZap(z) => vec![
                 PrinterInstruction::Text(format!(
-                    "Did you just lick a 9V battery? It is now zap {z}"
+                    "Did you just lick a 9V battery? It is now zap {z:x}"
                 )),
                 PrinterInstruction::PrintCut,
             ],