diff --git a/README.md b/README.md
index 2c31e49c17..940ae43403 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ hf.setCellContents({ sheet: sheetId, row: 0, col: 0 }, [['Monthly Payment', '=PM
 console.log(`${hf.getCellValue({ sheet: sheetId, row: 0, col: 0 })}: ${hf.getCellValue({ sheet: sheetId, row: 0, col: 1 })}`);
 ```
 
-[Run this code in CodeSandbox](https://codesandbox.io/p/sandbox/github/handsontable/hyperformula-demos/tree/3.0.x/mortgage-calculator)
+[Run this code in StackBlitz](https://stackblitz.com/github/handsontable/hyperformula-demos/tree/3.0.x/mortgage-calculator)
 
 ## Contributing
 
diff --git a/docs/index.md b/docs/index.md
index c73b5aa0a7..f74c47da29 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -102,7 +102,7 @@ hf.setCellContents({ sheet: sheetId, row: 0, col: 0 }, [['Monthly Payment', '=PM
 console.log(`${hf.getCellValue({ sheet: sheetId, row: 0, col: 0 })}: ${hf.getCellValue({ sheet: sheetId, row: 0, col: 1 })}`);
 ```
 
-[Run this code in CodeSandbox](https://codesandbox.io/p/sandbox/github/handsontable/hyperformula-demos/tree/3.0.x/mortgage-calculator)
+[Run this code in StackBlitz](https://stackblitz.com/github/handsontable/hyperformula-demos/tree/3.0.x/mortgage-calculator)
 
 ## Contributing