diff --git a/README.md b/README.md
index c5157f3..c4846b7 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 [中文](README_zh.md)
 
-Calculate CG coefficient, Racah coefficient, Wigner 3j, 6j, 9j coefficient, Moshinsky bracket, etc. Some formula please see [CGcoefficient.jl](https://0382.github.io/CGcoefficient.jl/stable/formula/).
+Calculate CG coefficient, Racah coefficient, Wigner 3j, 6j, 9j coefficient, Moshinsky bracket, etc. Some formula please see [CGcoefficient.jl](https://0382.github.io/CGcoefficient.jl/stable/wigner/).
 
 ## Usage
 
@@ -132,4 +132,4 @@ The `wigner_init` function is **not** thread safe. So you shuld not call `winger
 ## Reference
 
 1. T. Engeland and M. Hjorth-Jensen, the Oslo-FCI code. https://github.com/ManyBodyPhysics/CENS.
-2. A. N. Moskalev D. A. Varshalovich and V. K. Khersonskii, *Quantum theory of angular momentum*.
\ No newline at end of file
+2. A. N. Moskalev D. A. Varshalovich and V. K. Khersonskii, *Quantum theory of angular momentum*.