diff --git a/cubedbt/src/lib.rs b/cubedbt/src/lib.rs
index 0cf9d13..29346d4 100644
--- a/cubedbt/src/lib.rs
+++ b/cubedbt/src/lib.rs
@@ -248,6 +248,12 @@ impl CodeCache {
     }
 }
 
+impl Default for CodeCache {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 /// Build a cache record header that preserves the original's kind/title and
 /// behavior descriptors, but marks it a `Variant` (a mimicked implementation).
 fn cache_header_for(original: &CodeCell, body: &[u8]) -> (CubeHeader, Vec<u8>) {