diff --git a/.travis.yml b/.travis.yml
index a9dbf0c..613b464 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,11 @@
 language: elixir
 
 elixir:
-  - 1.7
+  - 1.7.4
 
 otp_release:
-  - 20.0
-  - 21.0
+  - 20.3
+  - 21.2
   
 env: MIX_ENV=test
 
diff --git a/mix.lock b/mix.lock
index 1f9e89c..47a7727 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,5 +1,5 @@
 %{
-  "absinthe": {:hex, :absinthe, "1.4.13", "81eb2ff41f1b62cd6e992955f62c22c042d1079b7936c27f5f7c2c806b8fc436", [:mix], [{:dataloader, "~> 1.0.0", [hex: :dataloader, repo: "hexpm", optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
+  "absinthe": {:hex, :absinthe, "1.4.14", "fef224a6aac63d6eaafbc0cb96040a8abcd572275b9b4db69d46329acdcae7c7", [:mix], [{:dataloader, "~> 1.0.0", [hex: :dataloader, repo: "hexpm", optional: true]}, {:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
   "absinthe_plug": {:hex, :absinthe_plug, "1.4.6", "ac5d2d3d02acf52fda0f151b294017ab06e2ed1c6c15334e06aac82c94e36e08", [:mix], [{:absinthe, "~> 1.4.11", [hex: :absinthe, repo: "hexpm", optional: false]}, {:plug, "~> 1.3.2 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "apollo_tracing": {:hex, :apollo_tracing, "0.4.1", "210d20693f88bd133a55b04dc1d990ce68ce620a804773731faf180b8b85aa4e", [:mix], [{:absinthe, "~> 1.4", [hex: :absinthe, repo: "hexpm", optional: false]}, {:absinthe_plug, "~> 1.4", [hex: :absinthe_plug, repo: "hexpm", optional: true]}], "hexpm"},
   "google_protos": {:hex, :google_protos, "0.1.0", "c6b9e12092d17571b093d4156d004494ca143b65dbbcbfc3ffff463ea03467c0", [:mix], [{:protobuf, "~> 0.5", [hex: :protobuf, repo: "hexpm", optional: false]}], "hexpm"},