diff --git a/schala-lang/language/src/lib.rs b/schala-lang/language/src/lib.rs
index 1a61bcf..21d2a13 100644
--- a/schala-lang/language/src/lib.rs
+++ b/schala-lang/language/src/lib.rs
@@ -6,7 +6,6 @@
 //! It defines the `Schala` type, which contains the state for a Schala REPL, and implements
 //! `ProgrammingLanguageInterface` and the chain of compiler passes for it.
 
-extern crate itertools;
 #[macro_use]
 extern crate lazy_static;
 #[macro_use]
@@ -14,10 +13,7 @@ extern crate maplit;
 extern crate schala_repl;
 #[macro_use]
 extern crate schala_lang_codegen;
-extern crate ena;
 extern crate derivative;
-extern crate colored;
-extern crate radix_trie;
 
 
 macro_rules! bx {