diff --git a/Makefile b/Makefile
index 07fe13cbb..6e01a0450 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ dep_jsx     = git https://github.com/talentdeficit/jsx 2.9.0
 dep_gproc   = git https://github.com/uwiger/gproc 0.8.0
 dep_gen_rpc = git https://github.com/emqx/gen_rpc 2.3.0
 dep_esockd  = git https://github.com/emqx/esockd v5.4.2
-dep_ekka    = git https://github.com/emqx/ekka v0.5.0
+dep_ekka    = git https://github.com/emqx/ekka v0.5.1
 dep_cowboy  = git https://github.com/ninenines/cowboy 2.4.0
 dep_clique  = git https://github.com/emqx/clique develop
 
diff --git a/rebar.config b/rebar.config
index 0af3f6b3e..fa2ab588f 100644
--- a/rebar.config
+++ b/rebar.config
@@ -6,7 +6,7 @@
 %% appended to deps in rebar.config.script
 {github_emqx_deps,
     [{gen_rpc, "2.3.0"},
-     {ekka, "v0.5.0"},
+     {ekka, "v0.5.1"},
      {clique, "develop"},
      {esockd, "v5.4.2"},
      {cuttlefish, "v2.1.0"}
diff --git a/src/emqx_sm_locker.erl b/src/emqx_sm_locker.erl
index d50d16ccc..29adf3342 100644
--- a/src/emqx_sm_locker.erl
+++ b/src/emqx_sm_locker.erl
@@ -43,11 +43,11 @@ trans(ClientId, Fun, Piggyback) ->
 
 -spec(lock(emqx_types:client_id()) -> ekka_locker:lock_result()).
 lock(ClientId) ->
-    ekka_locker:aquire(?MODULE, ClientId, strategy()).
+    ekka_locker:acquire(?MODULE, ClientId, strategy()).
 
 -spec(lock(emqx_types:client_id(), ekka_locker:piggyback()) -> ekka_locker:lock_result()).
 lock(ClientId, Piggyback) ->
-    ekka_locker:aquire(?MODULE, ClientId, strategy(), Piggyback).
+    ekka_locker:acquire(?MODULE, ClientId, strategy(), Piggyback).
 
 -spec(unlock(emqx_types:client_id()) -> {boolean(), [node()]}).
 unlock(ClientId) ->