diff --git a/src/cell/builder.rs b/src/cell/builder.rs
index e2af3e8..22ea984 100644
--- a/src/cell/builder.rs
+++ b/src/cell/builder.rs
@@ -125,6 +125,13 @@ impl<T: Store> Store for Option<T> {
     }
 }
 
+impl Store for CellBuilder {
+    #[inline]
+    fn store_into(&self, builder: &mut CellBuilder, _: &dyn CellContext) -> Result<(), Error> {
+        builder.store_builder(self)
+    }
+}
+
 impl Store for CellSlice<'_> {
     #[inline]
     fn store_into(&self, builder: &mut CellBuilder, _: &dyn CellContext) -> Result<(), Error> {