diff --git a/README.ko.md b/README.ko.md
index cbe5238..bf6773b 100644
--- a/README.ko.md
+++ b/README.ko.md
@@ -1040,7 +1040,7 @@ socialOptions: # override params.toml file socialOptions
 
 ## External Library
 
-현재 지원하는 외부 라이브러리는 Katex, MathJax, Mermaid, Flowchart.js, chart.js, viz-graph, wavedrom, js-sequence-diagram 입니다. front-matter에 값을 넣어주시면 해당 라이브러리가 로드됩니다.
+현재 지원하는 외부 라이브러리는 Katex, MathJax, Mermaid, Flowchart.js, chart.js, viz-graph, wavedrom, js-sequence-diagram, jsxgraph 입니다. front-matter에 값을 넣어주시면 해당 라이브러리가 로드됩니다.
 
 ```bash
 ---
@@ -1057,6 +1057,7 @@ libraries:
 - mermaid
 - viz
 - wavedrom
+- jsxgraph
 ---
 
 ```
diff --git a/README.md b/README.md
index c1637d3..b76caa2 100644
--- a/README.md
+++ b/README.md
@@ -1065,7 +1065,7 @@ If you want to support mobile favicon, use [favicon-generator](https://www.favic
 
 ## External Library
 
-If you want use external libraries, this theme currently supporting Katex, MathJax, Mermaid, Flowchart.js, chart.js, viz-graph, wavedrom, js-sequence-diagram. Just add some variable to a front-matter.
+If you want use external libraries, this theme currently supporting Katex, MathJax, Mermaid, Flowchart.js, chart.js, viz-graph, wavedrom, js-sequence-diagram, jsxgraph. Just add some variable to a front-matter.
 
 ```bash
 ---
@@ -1082,6 +1082,7 @@ libraries:
 - mermaid
 - viz
 - wavedrom
+- jsxgraph
 ---
 
 ```