--- a/src/ast_dump.rs
+++ b/src/ast_dump.rs
@@ -147,7 +147,8 @@ impl expr {
             expr::Attribute(value, attr, ctx) => format!("{}.{}", value.to_string(), attr),
             expr::Name(name, ctx) => format!("{}", name),
             expr::List(elts, ctx) => format!("[{}]", args_to_string(elts)),
-            expr::ListComp(elt, generators) => format!("[{} {}]", elt.to_string(), generators_to_string(generators))
+            expr::ListComp(elt, generators) => format!("[{} {}]", elt.to_string(), generators_to_string(generators)),
+            expr::DictComp(key, value, generators) => format!("{{{}: {} {}}}", key.to_string(), value.to_string(), generators_to_string(generators))
         }
     }
 }