diff --git a/.drone.yml b/.drone.yml
index 282a341..a2f7ac9 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -18,11 +18,16 @@ clone:
   disable: true
 
 steps:
-  # 0️⃣ 克隆代码
+  # 0️⃣ 克隆代码（带自签证书）
   - name: clone
     image: alpine/git:latest
+    environment:
+      CA_CRT:
+        from_secret: ca-crt
     commands:
       - apk add --no-cache ca-certificates
+      - echo "$CA_CRT" > /etc/ssl/certs/ca.crt
+      - update-ca-certificates
       - git clone https://gitea.local.knowai/tobegold574/knowai.git /drone/src
       - cd /drone/src
       - git checkout ${DRONE_BRANCH}