diff --git a/CHANGES-4.3.md b/CHANGES-4.3.md
index 99ff74d8f..b9b780dfa 100644
--- a/CHANGES-4.3.md
+++ b/CHANGES-4.3.md
@@ -23,6 +23,7 @@ File format:
 
 * Prohibit empty topics in strict mode
 * Make sure ehttpc delete useless pool always succeed.
+* Update mongodb driver to fix potential process leak.
 
 ## v4.3.13
 
diff --git a/apps/emqx_auth_mongo/rebar.config b/apps/emqx_auth_mongo/rebar.config
index c89c15d3c..4283b7920 100644
--- a/apps/emqx_auth_mongo/rebar.config
+++ b/apps/emqx_auth_mongo/rebar.config
@@ -1,6 +1,6 @@
 {deps,
   %% NOTE: mind poolboy version when updating mongodb-erlang version
- [{mongodb, {git,"https://github.com/emqx/mongodb-erlang", {tag, "v3.0.12"}}},
+ [{mongodb, {git,"https://github.com/emqx/mongodb-erlang", {tag, "v3.0.13"}}},
   %% mongodb-erlang uses a special fork https://github.com/comtihon/poolboy.git
   %% (which has overflow_ttl feature added).
   %% However, it references `{branch, "master}` (commit 9c06a9a on 2021-04-07).
@@ -29,4 +29,3 @@
 {cover_enabled, true}.
 {cover_opts, [verbose]}.
 {cover_export_enabled, true}.
-