diff --git a/rebar.config b/rebar.config
index 456a159..c8b781e 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,15 +1,17 @@
 %% -*- erlang -*-
+{minimum_otp_vsn, "21.0"}.
+
 {deps,
  [
-  {sext, "1.4.1"},
-  {rocksdb,"0.24.0"}
+  {sext, "1.8.0"},
+  {rocksdb,"1.6.0"}
  ]}.
 
 {profiles,
  [
   {test,
    [
-    {deps, [ {proper, "1.2.0"}
-           , {meck, "0.8.13"}]}
+    {deps, [ {proper, "1.3.0"}
+           , {meck, "0.9.0"}]}
    ]}
  ]}.
diff --git a/rebar.lock b/rebar.lock
index af8f10b..a049cf5 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -1,8 +1,11 @@
-{"1.1.0",
-[{<<"rocksdb">>,{pkg,<<"rocksdb">>,<<"0.24.0">>},0},
- {<<"sext">>,{pkg,<<"sext">>,<<"1.4.1">>},0}]}.
+{"1.2.0",
+[{<<"rocksdb">>,{pkg,<<"rocksdb">>,<<"1.6.0">>},0},
+ {<<"sext">>,{pkg,<<"sext">>,<<"1.8.0">>},0}]}.
 [
 {pkg_hash,[
- {<<"rocksdb">>, <<"1FC862628B95A0D3AF05FAB709858AC1FA4199C0722BC4652236B0949304A04D">>},
- {<<"sext">>, <<"14559B219FAF11F9EBA7A350DFFC69C966C668439C54947A42D67167002798C4">>}]}
+ {<<"rocksdb">>, <<"E3F7286987C901DA3286E38A676254CD575821DB00214B4745B94BB4BE82A1F3">>},
+ {<<"sext">>, <<"90A95B889F5C781B70BBCF44278B763148E313C376B60D87CE664CB1C1DD29B5">>}]},
+{pkg_hash_ext,[
+ {<<"rocksdb">>, <<"4DFA34F05B678207578488D14776705AC13A29425EB1A0CEFCA4A8BC16E8B53F">>},
+ {<<"sext">>, <<"BC6016CB8690BAF677EACACFE6E7CADFEC8DC7E286CBBED762F6CD55B0678E73">>}]}
 ].
diff --git a/src/mnesia_rocksdb.erl b/src/mnesia_rocksdb.erl
index 1411b27..a498664 100644
--- a/src/mnesia_rocksdb.erl
+++ b/src/mnesia_rocksdb.erl
@@ -457,8 +457,8 @@ close_table_(Alias, Tab) ->
 pp_stack() ->
     Trace = try throw(true)
             catch
-                _:_ ->
-                    case erlang:get_stacktrace() of
+                _:_:ST ->
+                    case ST of
                         [_|T] -> T;
                         [] -> []
                     end