diff --git a/src/Client.php b/src/Client.php
index e0987936..544c0e43 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -588,7 +588,7 @@ protected function needsKeypairAuthentication(RequestInterface $request): bool
 
     protected function getVersion(): string
     {
-        return Versions::getVersion('vonage/client-core');
+        return InstalledVersions::getVersion('vonage/client-core');
     }
 
     public function getLogger(): ?LoggerInterface