diff --git a/gen.py b/gen.py
index 560cfab..551265e 100644
--- a/gen.py
+++ b/gen.py
@@ -52,7 +52,7 @@ def get_or_generate_keys():
 
 # 生成许可证密钥
 def generate_license_key(client_id, expiry, private_key):
-    payload = f"{client_id}.{expiry}"
+    payload = f"{client_id}{expiry}"
     signature = private_key.sign(
         payload.encode(),
         padding.PSS(
@@ -61,7 +61,7 @@ def generate_license_key(client_id, expiry, private_key):
         hashes.SHA256(),
     )
     signature_b64 = base64.b64encode(signature).decode()
-    license_key = f"{payload}.{signature_b64}"
+    license_key = f"{client_id}.{expiry}.{signature_b64}"
     return license_key
 
 
diff --git a/license_key.txt b/license_key.txt
index af357d9..f4d7d30 100644
--- a/license_key.txt
+++ b/license_key.txt
@@ -1 +1 @@
-123.4854327772.YyXzCoVjDTphQztWbgBzVeoUOASzKWLqh+4yDyzROZdI2EuOtePGV+EGtob0FToMwWir3JZQeZ8ixLzBnfCben6B50Kv1QJLTs9eAa7o4fYOvQvipWdgjguXdTQt9+iDJyOEahOmRCEeSrhtAExWYhCTzF8WqZnHWcWlmeKBMi8=
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+123.4854336818.wsa9szP4cFkYr5TJtAuLtj/WjvDAsTp6xD/1R4XP9Gl5rZhqA/xeYk8zQMSHPf07aieXvXHE8DrGKpszVFkI4HOji6mLZo875zE4ViBZsAfly3AdzWiEAwRkXyuM29dFQ8VWvNomT7funwU8XNnzc3oCejFwNPAOa97P0WrZV/4=
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diff --git a/windmill.svg b/windmill.svg
new file mode 100644
index 0000000..85e36f3
--- /dev/null
+++ b/windmill.svg
@@ -0,0 +1,2 @@
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