diff --git a/README.md b/README.md
index 40c33ca..9ad0d7f 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ fn fibonacci(n: u16) -> u16 {
 Currently missing relevant features (TODOs) are:
 - ~~Arrays~~ (DONE)
 - Structs (and custom types as such)
-- Extern functions
+- ~~Extern functions~~ (DONE)
 - ~~Strings~~ (DONE)
 - Loops
 
diff --git a/reid/src/lib.rs b/reid/src/lib.rs
index 15ff340..74d43c2 100644
--- a/reid/src/lib.rs
+++ b/reid/src/lib.rs
@@ -35,7 +35,7 @@
 //! Currently missing relevant features (TODOs) are:
 //! - ~~Arrays~~ (DONE)
 //! - Structs (and custom types as such)
-//! - Extern functions
+//! - ~~Extern functions~~ (DONE)
 //! - ~~Strings~~ (DONE)
 //! - Loops
 //! ```