diff --git a/src/bin/demo.rs b/src/bin/demo.rs
index 846557e..cddce1d 100644
--- a/src/bin/demo.rs
+++ b/src/bin/demo.rs
@@ -1,6 +1,6 @@
-use deriv::expression::Expression;
-use deriv::eval::Evaluator;
-use deriv::repl::Repl;
+use deriv::Expression;
+use deriv::Evaluator;
+use deriv::Repl;
 
 struct DummyEvaluator;
 
diff --git a/src/lib.rs b/src/lib.rs
index cc0e2cb..b1737cb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,3 +7,7 @@ pub mod eval;
 pub mod print;
 
 pub mod repl;
+
+pub use expression::Expression;
+pub use eval::Evaluator;
+pub use repl::Repl;