diff --git a/pageserver/src/client/mgmt_api.rs b/pageserver/src/client/mgmt_api.rs
index 10d39ec9cd..66d7da9d0b 100644
--- a/pageserver/src/client/mgmt_api.rs
+++ b/pageserver/src/client/mgmt_api.rs
@@ -93,6 +93,22 @@ impl Client {
             .map_err(Error::ReceiveBody)
     }
 
+    pub async fn keyspace(
+        &self,
+        tenant_id: TenantId,
+        timeline_id: TimelineId,
+    ) -> Result<crate::http::models::partitioning::Partitioning> {
+        let uri = format!(
+            "{}/v1/tenant/{tenant_id}/timeline/{timeline_id}/keyspace?check_serialization_roundtrip=true",
+            self.mgmt_api_endpoint
+        );
+        self.get(&uri)
+            .await?
+            .json()
+            .await
+            .map_err(Error::ReceiveBody)
+    }
+
     async fn get<U: IntoUrl>(&self, uri: U) -> Result<reqwest::Response> {
         self.request(Method::GET, uri, ()).await
     }
diff --git a/vendor/postgres-v14 b/vendor/postgres-v14
index dd067cf656..0bb356aa0c 160000
--- a/vendor/postgres-v14
+++ b/vendor/postgres-v14
@@ -1 +1 @@
-Subproject commit dd067cf656f6810a25aca6025633d32d02c5085a
+Subproject commit 0bb356aa0cd1582112926fbcf0b5370222c2db6d
diff --git a/vendor/postgres-v15 b/vendor/postgres-v15
index bc88f53931..24333abb81 160000
--- a/vendor/postgres-v15
+++ b/vendor/postgres-v15
@@ -1 +1 @@
-Subproject commit bc88f539312fcc4bb292ce94ae9db09ab6656e8a
+Subproject commit 24333abb81a9ecae4541019478f0bf7d0b289df7
diff --git a/vendor/postgres-v16 b/vendor/postgres-v16
index e3a22b7292..863b71572b 160000
--- a/vendor/postgres-v16
+++ b/vendor/postgres-v16
@@ -1 +1 @@
-Subproject commit e3a22b72922055f9212eca12700190f118578362
+Subproject commit 863b71572bc441581efb3bbee2ad18af037be1bb