diff --git a/TODO.md b/TODO.md
index 152c27e..8663d6f 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2,7 +2,7 @@
 
 * [x] Redo gradient descent video about
 * [x] delta weight formulas, connect to "mathematics of gradient" video
-* [x] Impelment gradient descent in library / with code
+* [x] Implement gradient descent in library / with code
 * [ ] XOR coding challenge
 * [ ] MNIST coding challenge
 * [ ] Support for multiple hidden layers