diff --git a/libretrogd/src/utils/lzwgif.rs b/libretrogd/src/utils/lzwgif.rs
index 768464b..62890d3 100644
--- a/libretrogd/src/utils/lzwgif.rs
+++ b/libretrogd/src/utils/lzwgif.rs
@@ -17,6 +17,8 @@
 //! * The LZW-encoded stream always starts with a "clear code" and ends with an "end of information"
 //!   code. The "clear code" may also appear at other times within the stream.
 
+// TODO: LZW encode/decode algorithm optimizations. specifically, moving away from use of HashMaps
+
 use std::collections::HashMap;
 
 use byteorder::{ReadBytesExt, WriteBytesExt};