diff --git a/configuration/.vscode/extensions.json b/configuration/.vscode/extensions.json
index eddc4b559eb468a4436f0a8893cd677e5eaa1f07..c67b894895b22bbd2ce2548d8f03599136caf1b7 100644
--- a/configuration/.vscode/extensions.json
+++ b/configuration/.vscode/extensions.json
@@ -5,11 +5,11 @@
 	"recommendations": [
 		"ms-vscode.cpptools",
 		"vadimcn.vscode-lldb",
-		"mathematic.vscode-pdf"
+		"tomoki1207.pdf"
 	],
 	// List of extensions recommended by VS Code that should not be recommended for users of this workspace.
 	"unwantedRecommendations": [
 		"twxs.cmake",
 		"ms-vscode.cmake-tools"
 	]
-}
\ No newline at end of file
+}