diff --git a/lib/vex/validator/source.ex b/lib/vex/validator/source.ex
index 3366949..98960bb 100644
--- a/lib/vex/validator/source.ex
+++ b/lib/vex/validator/source.ex
@@ -13,7 +13,7 @@ defimpl Vex.Validator.Source, for: Atom do
   end
 
   defp validator_by_function(source, name) do
-    Code.ensure_loaded(source)
+    FastEnsureLoaded.ensure_loaded(source)
     if function_exported?(source, :validator, 1) do
       check source.validator(name)
     end
@@ -24,7 +24,7 @@ defimpl Vex.Validator.Source, for: Atom do
   end
 
   defp check(validator) do
-    Code.ensure_loaded(validator)
+    FastEnsureLoaded.ensure_loaded(validator)
     if function_exported?(validator, :validate, 2) do
       validator
     end
diff --git a/mix.exs b/mix.exs
index f84a94c..cb75f8b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -19,11 +19,11 @@ defmodule Vex.Mixfile do
 
   # Configuration for the OTP application
   def application do
-    [applications: [:eex]]
+    [applications: [:eex, :fast_ensure_loaded]]
   end
 
   defp deps do
-    [{:ex_doc, "~> 0.16", only: :dev, runtime: false}]
+    [{:ex_doc, "~> 0.16", only: :dev, runtime: false}, {:fast_ensure_loaded, "~> 0.1.0"}]
   end
 
   defp package do
diff --git a/mix.lock b/mix.lock
index 4c0cc58..32f536b 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,2 +1,6 @@
-%{"earmark": {:hex, :earmark, "1.2.3", "206eb2e2ac1a794aa5256f3982de7a76bf4579ff91cb28d0e17ea2c9491e46a4", [], [], "hexpm"},
-  "ex_doc": {:hex, :ex_doc, "0.18.1", "37c69d2ef62f24928c1f4fdc7c724ea04aecfdf500c4329185f8e3649c915baf", [], [{:earmark, "~> 1.1", [hex: :earmark, repo: "hexpm", optional: false]}], "hexpm"}}
+%{
+  "earmark": {:hex, :earmark, "1.2.3", "206eb2e2ac1a794aa5256f3982de7a76bf4579ff91cb28d0e17ea2c9491e46a4", [:mix], [], "hexpm"},
+  "ex_doc": {:hex, :ex_doc, "0.18.1", "37c69d2ef62f24928c1f4fdc7c724ea04aecfdf500c4329185f8e3649c915baf", [:mix], [{:earmark, "~> 1.1", [hex: :earmark, repo: "hexpm", optional: false]}], "hexpm"},
+  "fast_ensure_loaded": {:hex, :fast_ensure_loaded, "0.1.0", "f988c89a1e4f86d8781a2c12c60cd43772e408d0855dc487cdbcc2dc458513b5", [:mix], [{:fastglobal, "~> 1.0", [hex: :fastglobal, repo: "hexpm", optional: false]}], "hexpm"},
+  "fastglobal": {:hex, :fastglobal, "1.0.0", "f3133a0cda8e9408aac7281ec579c4b4a8386ce0e99ca55f746b9f58192f455b", [:mix], [], "hexpm"},
+}