diff --git a/images/hub/unfrozen/requirements.txt b/images/hub/unfrozen/requirements.txt
index 6441634fd7..21053476c7 100644
--- a/images/hub/unfrozen/requirements.txt
+++ b/images/hub/unfrozen/requirements.txt
@@ -16,7 +16,7 @@ jupyterhub-kubespawner==6.*
 # JupyterHub Authenticator choices
 jupyterhub-firstuseauthenticator==1.*
 jupyterhub-hmacauthenticator==1.*
-jupyterhub-ldapauthenticator==1.*
+jupyterhub-ldapauthenticator==2.*
 jupyterhub-ltiauthenticator==1.*
 jupyterhub-nativeauthenticator==1.*
 jupyterhub-tmpauthenticator==1.*