diff --git a/trunk/conf/origin.cluster.serverA.conf b/trunk/conf/origin.cluster.serverA.conf
index 7bc73c63a..c9b0efa06 100644
--- a/trunk/conf/origin.cluster.serverA.conf
+++ b/trunk/conf/origin.cluster.serverA.conf
@@ -15,6 +15,6 @@ vhost __defaultVhost__ {
     cluster {
         mode            local;
         origin_cluster  on;
-        coworkers       127.0.0.1:9090 127.0.0.1:9091 127.0.0.1:9092;
+        coworkers       127.0.0.1:9091 127.0.0.1:9092;
     }
 }
diff --git a/trunk/conf/origin.cluster.serverB.conf b/trunk/conf/origin.cluster.serverB.conf
index b06417cd8..fe65bb0a3 100644
--- a/trunk/conf/origin.cluster.serverB.conf
+++ b/trunk/conf/origin.cluster.serverB.conf
@@ -15,6 +15,6 @@ vhost __defaultVhost__ {
     cluster {
         mode            local;
         origin_cluster  on;
-        coworkers       127.0.0.1:9090 127.0.0.1:9091 127.0.0.1:9092;
+        coworkers       127.0.0.1:9090 127.0.0.1:9092;
     }
 }
diff --git a/trunk/conf/origin.cluster.serverC.conf b/trunk/conf/origin.cluster.serverC.conf
index efb991cc7..72bec36e5 100644
--- a/trunk/conf/origin.cluster.serverC.conf
+++ b/trunk/conf/origin.cluster.serverC.conf
@@ -15,6 +15,6 @@ vhost __defaultVhost__ {
     cluster {
         mode            local;
         origin_cluster  on;
-        coworkers       127.0.0.1:9090 127.0.0.1:9091 127.0.0.1:9092;
+        coworkers       127.0.0.1:9090 127.0.0.1:9091;
     }
 }
diff --git a/trunk/doc/CHANGELOG.md b/trunk/doc/CHANGELOG.md
index d59657dcf..aa2c42562 100644
--- a/trunk/doc/CHANGELOG.md
+++ b/trunk/doc/CHANGELOG.md
@@ -30,6 +30,8 @@ The changelog for SRS.
 
 ## SRS 4.0 Changelog
 
+* v4.0, 2021-10-27, Merge [#1963](https://github.com/ossrs/srs/pull/1963): Cluster: Origin server shouldn't be it's own coworker. v4.0.186
+* v4.0, 2021-10-25, Merge [#2692](https://github.com/ossrs/srs/pull/2692): API: Add server_id into http_hooks. v4.0.185
 * v4.0, 2021-10-22, Merge [#2687](https://github.com/ossrs/srs/pull/2687): API: Always stat client event if auth fail. v4.0.183
 * v4.0, 2021-10-20, Merge [#1758](https://github.com/ossrs/srs/pull/1758): JSON: Support escape special chars. v4.0.182
 * v4.0, 2021-10-19, Merge [#1754](https://github.com/ossrs/srs/pull/1754): RTMP: If port is explicity set to 0, use default 1935. v4.0.181
diff --git a/trunk/src/core/srs_core_version4.hpp b/trunk/src/core/srs_core_version4.hpp
index ecb5d4d83..c37898b1d 100644
--- a/trunk/src/core/srs_core_version4.hpp
+++ b/trunk/src/core/srs_core_version4.hpp
@@ -9,6 +9,6 @@
 
 #define VERSION_MAJOR       4
 #define VERSION_MINOR       0
-#define VERSION_REVISION    184
+#define VERSION_REVISION    186
 
 #endif