diff --git a/README.md b/README.md
index d579ebe863846a9932aaa90c1174a56dd8281cd7..1454a0b1d353703e6fb380f2cf5475389b807d98 100644
--- a/README.md
+++ b/README.md
@@ -29,4 +29,4 @@ Codes are available in directory vectorization. Micro TP: vectorization of pi.c
 [Slides: GPU Introduction](5_GPU_0_introduction.pdf)
 
 ### 2021/11/16 Lecture on GPU in the morning
-[Slides: GPU Optimisation](6_GPU_1_optimize.pdf)
+~~[Slides: GPU Optimisation](6_GPU_1_optimize.pdf)~~ [New slides:](6-GPU_inside.pdf)