diff --git a/docs/reference/operator_parameters.md b/docs/reference/operator_parameters.md
index 6dd775069..83f693acc 100644
--- a/docs/reference/operator_parameters.md
+++ b/docs/reference/operator_parameters.md
@@ -900,6 +900,19 @@ grouped under the `logical_backup` key.
 * **logical_backup_cronjob_environment_secret**
   Reference to a Kubernetes secret, which keys will be added as environment variables to the cronjob. Default: ""
 
+The following environment variables can be passed to the logical backup
+cronjob via `logical_backup_cronjob_environment_secret` to control
+connectivity checks before the backup starts:
+
+* **LOGICAL_BACKUP_CONNECT_RETRIES**
+  Number of times to retry connecting to the target PostgreSQL pod before
+  giving up. This is useful when NetworkPolicy enforcement introduces a
+  short delay before a newly-created pod's IP is allowed through ingress
+  rules on the destination node. Default: "10"
+
+* **LOGICAL_BACKUP_CONNECT_RETRY_DELAY**
+  Delay in seconds between connectivity retries. Default: "2"
+
 ## Debugging the operator
 
 Options to aid debugging of the operator itself. Grouped under the `debug` key.
diff --git a/logical-backup/dump.sh b/logical-backup/dump.sh
index a250670a6..7833de399 100755
--- a/logical-backup/dump.sh
+++ b/logical-backup/dump.sh
@@ -183,6 +183,25 @@ function get_master_pod {
     get_pods "labelSelector=${CLUSTER_NAME_LABEL}%3D${SCOPE},spilo-role%3Dmaster" | tee | head -n 1
 }
 
+# Wait for TCP connectivity to the target PostgreSQL pod.
+# When NetworkPolicy is enforced via iptables, a newly-created pod's IP may not
+# yet be present in the destination node's ingress allow lists, causing
+# cross-node connections to be rejected until the next policy sync.
+function wait_for_pg {
+    local retries=${LOGICAL_BACKUP_CONNECT_RETRIES:-10}
+    local delay=${LOGICAL_BACKUP_CONNECT_RETRY_DELAY:-2}
+    local i
+    for (( i=1; i<=retries; i++ )); do
+        if "$PG_BIN"/pg_isready -h "$PGHOST" -p "${PGPORT:-5432}" -q 2>/dev/null; then
+            return 0
+        fi
+        echo "waiting for $PGHOST:${PGPORT:-5432} to become reachable (attempt $i/$retries)..."
+        sleep "$delay"
+    done
+    echo "ERROR: $PGHOST:${PGPORT:-5432} not reachable after $((retries * delay))s"
+    return 1
+}
+
 CURRENT_NODENAME=$(get_current_pod | jq .items[].spec.nodeName --raw-output)
 export CURRENT_NODENAME
 
@@ -197,6 +216,8 @@ for search in "${search_strategy[@]}"; do
 
 done
 
+wait_for_pg
+
 set -x
 if [ "$LOGICAL_BACKUP_PROVIDER" == "az" ]; then
     dump | compress > /tmp/azure-backup.sql.gz
diff --git a/ui/operator_ui/spiloutils.py b/ui/operator_ui/spiloutils.py
index 6a2f03bb2..8d2b73967 100644
--- a/ui/operator_ui/spiloutils.py
+++ b/ui/operator_ui/spiloutils.py
@@ -321,11 +321,18 @@ def read_basebackups(
     suffix = '' if uid == 'base' else '/' + uid
     backups = []
 
+    # Reuse a single S3 client configured with AWS_ENDPOINT so MinIO /
+    # other S3-compatible backends are hit for list+get calls too. The
+    # previous plain client('s3') fell back to the default AWS endpoint
+    # and returned empty data against a custom endpoint; read_stored_clusters
+    # and read_versions already pass endpoint_url=AWS_ENDPOINT (#3078).
+    s3_client = client('s3', endpoint_url=AWS_ENDPOINT)
+
     for vp in postgresql_versions:
         backup_prefix = f'{prefix}{pg_cluster}{suffix}/wal/{vp}/basebackups_005/'
         logger.info(f"{bucket}/{backup_prefix}")
 
-        paginator = client('s3').get_paginator('list_objects_v2')
+        paginator = s3_client.get_paginator('list_objects_v2')
         pages = paginator.paginate(Bucket=bucket, Prefix=backup_prefix)
 
         for page in pages:
@@ -334,7 +341,7 @@ def read_basebackups(
                 if not key.endswith("backup_stop_sentinel.json"):
                     continue
 
-                response = client('s3').get_object(Bucket=bucket, Key=key)
+                response = s3_client.get_object(Bucket=bucket, Key=key)
                 backup_info = loads(response["Body"].read().decode("utf-8"))
                 last_modified = response["LastModified"].astimezone(timezone.utc).isoformat()
 
diff --git a/ui/requirements.txt b/ui/requirements.txt
index 2e43ccb0e..ace18641d 100644
--- a/ui/requirements.txt
+++ b/ui/requirements.txt
@@ -11,4 +11,4 @@ kubernetes==11.0.0
 python-json-logger==2.0.7
 requests==2.32.4
 stups-tokens>=1.1.19
-werkzeug==3.1.5
+werkzeug==3.1.6