diff --git a/internal/declarative/v2/factory.go b/internal/declarative/v2/factory.go
index 41de79288c..e42dda5153 100644
--- a/internal/declarative/v2/factory.go
+++ b/internal/declarative/v2/factory.go
@@ -68,6 +68,9 @@ func NewSingletonClients(info *ClusterInfo) (*SingletonClients, error) {
 		return nil, err
 	}
 
+	// Required to prevent memory leak by avoiding caching in transport.tlsTransportCache, SingletonClients are cached anyways.
+	info.Config.Proxy = http.ProxyFromEnvironment
+
 	httpClient, err := rest.HTTPClientFor(info.Config)
 	if err != nil {
 		return nil, fmt.Errorf("failed to initiliaze httpClient: %w", err)