diff --git a/cg.rs b/cg.rs
index 0634ed3..94409db 100644
--- a/cg.rs
+++ b/cg.rs
@@ -12,6 +12,7 @@ native mod cg {
                                    ) -> CGDataProviderRef;
     fn CGDataProviderRelease(provider: CGDataProviderRef);
     fn CGFontCreateWithDataProvider(provider: CGDataProviderRef) -> CGFontRef;
+    fn CGFontRelease(font: CGFontRef);
 }
 
 type CGFontRef = *c_void;