diff --git a/config/config.schema.json b/config/config.schema.json
index ac9c370..e26e084 100644
--- a/config/config.schema.json
+++ b/config/config.schema.json
@@ -92,7 +92,7 @@
                         "type": "string",
                         "format": "hostname",
                         "examples": [
-                            "dekt.bit.edu.cn"
+                            "dzb.bit.edu.cn"
                         ]
                     }
                 }
diff --git a/config/config.yml b/config/config.yml
index b5630a0..2106407 100644
--- a/config/config.yml
+++ b/config/config.yml
@@ -18,7 +18,6 @@ proxy:
     # spell-checker: disable
     - century.bit.edu.cn
     - cxcy.bit.edu.cn
-    - dekt.bit.edu.cn
     - dzb.bit.edu.cn
     - mec.bit.edu.cn
     - student.bit.edu.cn
diff --git a/config/sources_by_selectors.json b/config/sources_by_selectors.json
index 5a2b71b..2ee8a01 100644
--- a/config/sources_by_selectors.json
+++ b/config/sources_by_selectors.json
@@ -277,18 +277,6 @@
                 "link": ".c-text > a"
             }
         },
-        {
-            "name": "第二课堂",
-            "guide": [
-                "第二课堂",
-                "课程信息"
-            ],
-            "url": "http://dekt.bit.edu.cn/portal/CourseList.jsp",
-            "selectors": {
-                "rows": "tbody tr",
-                "date": null
-            }
-        },
         {
             "name": "光电",
             "full_name": "光电学院",