diff --git a/Cargo.lock b/Cargo.lock
index fdbb53e24d63..5b438ed1d9d7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6093,9 +6093,9 @@ dependencies = [
 
 [[package]]
 name = "pgwire"
-version = "0.17.0"
+version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f7f181d085a224ff2b2ea46bd2066b487b87e83dabbcdfe60bf3f027f5d0593"
+checksum = "3b277432819ee6b76bf56de5e91eae578d6b332bd6f05f963ee81fc788bc886f"
 dependencies = [
  "async-trait",
  "base64 0.21.5",
diff --git a/src/servers/Cargo.toml b/src/servers/Cargo.toml
index e81dfaf593c8..727f4817e798 100644
--- a/src/servers/Cargo.toml
+++ b/src/servers/Cargo.toml
@@ -58,7 +58,7 @@ openmetrics-parser = "0.4"
 opensrv-mysql = { git = "https://github.com/MichaelScofield/opensrv.git", rev = "1676c1d" }
 opentelemetry-proto.workspace = true
 parking_lot = "0.12"
-pgwire = "0.17"
+pgwire = "0.18"
 pin-project = "1.0"
 postgres-types = { version = "0.2", features = ["with-chrono-0_4"] }
 pprof = { version = "0.13", features = [
diff --git a/src/servers/src/postgres.rs b/src/servers/src/postgres.rs
index 72039b7df722..0836ea51bb21 100644
--- a/src/servers/src/postgres.rs
+++ b/src/servers/src/postgres.rs
@@ -31,7 +31,6 @@ use std::sync::Arc;
 use ::auth::UserProviderRef;
 use derive_builder::Builder;
 use pgwire::api::auth::ServerParameterProvider;
-use pgwire::api::store::MemPortalStore;
 use pgwire::api::ClientInfo;
 pub use server::PostgresServer;
 use session::context::Channel;
@@ -40,7 +39,6 @@ use session::Session;
 use self::auth_handler::PgLoginVerifier;
 use self::handler::DefaultQueryParser;
 use crate::query_handler::sql::ServerSqlQueryHandlerRef;
-use crate::SqlPlan;
 
 pub(crate) struct GreptimeDBStartupParameters {
     version: &'static str,
@@ -76,7 +74,6 @@ pub struct PostgresServerHandler {
     param_provider: Arc<GreptimeDBStartupParameters>,
 
     session: Arc<Session>,
-    portal_store: Arc<MemPortalStore<SqlPlan>>,
     query_parser: Arc<DefaultQueryParser>,
 }
 
@@ -99,7 +96,6 @@ impl MakePostgresServerHandler {
             param_provider: self.param_provider.clone(),
 
             session: session.clone(),
-            portal_store: Arc::new(MemPortalStore::new()),
             query_parser: Arc::new(DefaultQueryParser::new(self.query_handler.clone(), session)),
         }
     }
diff --git a/src/servers/src/postgres/handler.rs b/src/servers/src/postgres/handler.rs
index edb4b2f593e0..5356057238a8 100644
--- a/src/servers/src/postgres/handler.rs
+++ b/src/servers/src/postgres/handler.rs
@@ -25,7 +25,6 @@ use pgwire::api::portal::{Format, Portal};
 use pgwire::api::query::{ExtendedQueryHandler, SimpleQueryHandler, StatementOrPortal};
 use pgwire::api::results::{DataRowEncoder, DescribeResponse, QueryResponse, Response, Tag};
 use pgwire::api::stmt::QueryParser;
-use pgwire::api::store::MemPortalStore;
 use pgwire::api::{ClientInfo, Type};
 use pgwire::error::{ErrorInfo, PgWireError, PgWireResult};
 use query::query_engine::DescribeResult;
@@ -192,11 +191,6 @@ impl QueryParser for DefaultQueryParser {
 impl ExtendedQueryHandler for PostgresServerHandler {
     type Statement = SqlPlan;
     type QueryParser = DefaultQueryParser;
-    type PortalStore = MemPortalStore<Self::Statement>;
-
-    fn portal_store(&self) -> Arc<Self::PortalStore> {
-        self.portal_store.clone()
-    }
 
     fn query_parser(&self) -> Arc<Self::QueryParser> {
         self.query_parser.clone()