diff --git a/src/gausskernel/optimizer/commands/dropcmds.cpp b/src/gausskernel/optimizer/commands/dropcmds.cpp
index a68303d61..7e43c1648 100644
--- a/src/gausskernel/optimizer/commands/dropcmds.cpp
+++ b/src/gausskernel/optimizer/commands/dropcmds.cpp
@@ -83,6 +83,7 @@ static void DropExtensionInListIsSupported(List* objname)
         "ndpplugin",
         "datavec",
         "chparser",
+        "timescaledb",
 #ifndef ENABLE_MULTIPLE_NODES
         "mysql_fdw",
         "oracle_fdw",