diff --git a/rebar.config b/rebar.config
index 0e01e9c2d..f1e1aa014 100644
--- a/rebar.config
+++ b/rebar.config
@@ -43,7 +43,7 @@
     , {ehttpc, {git, "https://github.com/emqx/ehttpc", {tag, "0.2.0"}}}
     , {gun, {git, "https://github.com/emqx/gun", {tag, "1.3.7"}}}
     , {eredis_cluster, {git, "https://github.com/emqx/eredis_cluster", {tag, "0.7.3"}}}
-    , {gproc, {git, "https://github.com/uwiger/gproc", {tag, "0.8.0"}}}
+    , {gproc, {git, "https://github.com/uwiger/gproc", {tag, "0.9.0"}}}
     , {jiffy, {git, "https://github.com/emqx/jiffy", {tag, "1.0.5"}}}
     , {cowboy, {git, "https://github.com/emqx/cowboy", {tag, "2.9.0"}}}
     , {esockd, {git, "https://github.com/emqx/esockd", {tag, "5.8.7"}}}
diff --git a/scripts/xref_check.eterm b/scripts/xref_check.eterm
index d09bee6a8..3a6e20835 100644
--- a/scripts/xref_check.eterm
+++ b/scripts/xref_check.eterm
@@ -507,6 +507,8 @@
           {{lwm2m_coap_responder,handle_observe,4},{pg2,create,1}},
           {{lwm2m_coap_responder,handle_observe,4},{pg2,join,2}},
           {{lwm2m_coap_responder,notify,2},{pg2,get_members,1}},
+          {{public_key,ssh_hostkey_fingerprint,1},{public_key,ssh_encode,2}},
+          {{public_key,ssh_hostkey_fingerprint,2},{public_key,ssh_encode,2}},
           {{ranch_ssl,handshake,3},{ssl,ssl_accept,3}}]
    }
 
@@ -532,6 +534,7 @@
           {pg2,join,2},
           {pg2,leave,2},
           {pg2,which_groups,0},
+          {public_key,ssh_encode,2},
           {ssl,ssl_accept,3}]
    }
 ].