diff --git a/.github/workflows/cla.yml b/.github/workflows/cla.yml
index 3fd73862..cce1327e 100644
--- a/.github/workflows/cla.yml
+++ b/.github/workflows/cla.yml
@@ -19,7 +19,7 @@ jobs:
           PERSONAL_ACCESS_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
         with:
           path-to-signatures: "signatures/version1/cla.json"
-          path-to-document: "https://github.com/cla-assistant/github-action/blob/master/SAPCLA.md" # e.g. a CLA or a DCO document
+          path-to-document: "https://raw.githubusercontent.com/w-okada/voice-changer/master/LICENSE-CLA" # e.g. a CLA or a DCO document
           # branch should not be protected
           branch: "master"
           #allowlist: user1,bot*
diff --git a/signatures/version1/cla.json b/signatures/version1/cla.json
deleted file mode 100644
index fe20ec3c..00000000
--- a/signatures/version1/cla.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "signedContributors": [
-    {
-      "name": "w-okada",
-      "id": 48346627,
-      "comment_id": 1667653492,
-      "created_at": "2023-08-07T11:07:00Z",
-      "repoId": 527419347,
-      "pullRequestNo": 659
-    }
-  ]
-}
\ No newline at end of file