diff --git a/app/src/main/java/io/legado/app/help/http/OkHttpUtils.kt b/app/src/main/java/io/legado/app/help/http/OkHttpUtils.kt
index 4dec4bf3e..f87d58aab 100644
--- a/app/src/main/java/io/legado/app/help/http/OkHttpUtils.kt
+++ b/app/src/main/java/io/legado/app/help/http/OkHttpUtils.kt
@@ -119,4 +119,8 @@ fun Request.Builder.postJson(json: String?) {
         val requestBody = json.toRequestBody("application/json; charset=UTF-8".toMediaType())
         post(requestBody)
     }
+}
+
+fun Request.Builder.mkCol() {
+    method("MKCOL", null)
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
index 51f52cc9a..8d20fdd17 100644
--- a/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
+++ b/app/src/main/java/io/legado/app/lib/webdav/WebDav.kt
@@ -1,5 +1,6 @@
 package io.legado.app.lib.webdav
 
+import io.legado.app.help.http.mkCol
 import io.legado.app.help.http.newCall
 import io.legado.app.help.http.okHttpClient
 import io.legado.app.help.http.text
@@ -148,9 +149,9 @@ class WebDav(urlStr: String) {
             return kotlin.runCatching {
                 okHttpClient.newCall {
                     url(url)
-                    method("MKCOL", null)
+                    mkCol()
                     addHeader("Authorization", Credentials.basic(auth.user, auth.pass))
-                }
+                }.close()
             }.isSuccess
         }
         return false
@@ -192,7 +193,7 @@ class WebDav(urlStr: String) {
                 url(url)
                 put(fileBody)
                 addHeader("Authorization", Credentials.basic(auth.user, auth.pass))
-            }
+            }.close()
             return true
         }
         return false
@@ -208,7 +209,7 @@ class WebDav(urlStr: String) {
                 url(url)
                 put(fileBody)
                 addHeader("Authorization", Credentials.basic(auth.user, auth.pass))
-            }
+            }.close()
             return true
         }
         return false