diff --git a/crates/flat/src/encode.rs b/crates/flat/src/encode.rs
index 22935cfe..b747278b 100644
--- a/crates/flat/src/encode.rs
+++ b/crates/flat/src/encode.rs
@@ -12,6 +12,14 @@ impl Encode for bool {
     }
 }
 
+impl Encode for u8 {
+    fn encode(&self, e: &mut Encoder) -> Result<(), String> {
+        e.u8(*self)?;
+
+        Ok(())
+    }
+}
+
 impl<T, K> Encode for (T, K)
 where
     T: Encode,
diff --git a/crates/flat/src/encoder.rs b/crates/flat/src/encoder.rs
index 4ac01dee..24b2e7a4 100644
--- a/crates/flat/src/encoder.rs
+++ b/crates/flat/src/encoder.rs
@@ -30,7 +30,14 @@ impl Encoder {
     }
 
     pub fn u8(&mut self, x: u8) -> Result<&mut Self, String> {
-        todo!()
+        if self.used_bits == 0 {
+            self.current_byte = x;
+            self.next_word();
+        } else {
+            todo!()
+        }
+
+        Ok(self)
     }
 
     /// Encode a `bool` value.
diff --git a/crates/flat/src/lib.rs b/crates/flat/src/lib.rs
index 1c0c1334..e9b3b107 100644
--- a/crates/flat/src/lib.rs
+++ b/crates/flat/src/lib.rs
@@ -30,4 +30,11 @@ mod test {
 
         assert_eq!(bytes, vec![0b00000001]);
     }
+
+    #[test]
+    fn encode_u8() {
+        let bytes = super::encode(3_u8).unwrap();
+
+        assert_eq!(bytes, vec![0b00000011, 0b00000001]);
+    }
 }