diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd07065a..7f195335 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,19 +16,11 @@ jobs:
       fail-fast: false
       matrix:
         elixir:
+          - '1.20'
           - '1.19'
           - '1.18'
           - '1.17'
           - '1.16'
-          - '1.15'
-          - '1.14'
-          - '1.13'
-          - '1.12'
-          - '1.11'
-          - '1.10'
-          - '1.9'
-          - '1.8'
-          - '1.7'
 
     steps:
       - uses: actions/checkout@v4
diff --git a/lib/cachex.ex b/lib/cachex.ex
index 60b6e9a9..32e18ef2 100644
--- a/lib/cachex.ex
+++ b/lib/cachex.ex
@@ -49,7 +49,6 @@ defmodule Cachex do
 
   # import util macros
   require Router
-  require Overseer
 
   # avoid inspect clashes
   import Kernel, except: [inspect: 2]
diff --git a/lib/cachex/spec/validator.ex b/lib/cachex/spec/validator.ex
index da76368a..08f82b03 100644
--- a/lib/cachex/spec/validator.ex
+++ b/lib/cachex/spec/validator.ex
@@ -10,7 +10,7 @@ defmodule Cachex.Spec.Validator do
   import Cachex.Spec
 
   # internal spec to refer to each record type
-  @type record ::
+  @type spec_record ::
           Cachex.Spec.command()
           | Cachex.Spec.entry()
           | Cachex.Spec.expiration()
@@ -31,7 +31,7 @@ defmodule Cachex.Spec.Validator do
 
   This will delegate each record type to a customized validation function.
   """
-  @spec valid?(atom, record) :: boolean
+  @spec valid?(atom, spec_record) :: boolean
 
   # Validates a command specification record.
   #
diff --git a/mix.exs b/mix.exs
index 92a128df..0a8a9a70 100644
--- a/mix.exs
+++ b/mix.exs
@@ -61,7 +61,16 @@ defmodule Cachex.Mixfile do
       test_coverage: [
         tool: ExCoveralls
       ],
-      preferred_cli_env: [
+      aliases: [
+        bench: "run benchmarks/main.exs",
+        test: [&start_epmd/1, "test"]
+      ]
+    ]
+  end
+
+  def cli do
+    [
+      preferred_envs: [
         docs: :docs,
         bench: :bench,
         credo: :lint,
@@ -69,10 +78,6 @@ defmodule Cachex.Mixfile do
         coveralls: :cover,
         "coveralls.html": :cover,
         "coveralls.travis": :cover
-      ],
-      aliases: [
-        bench: "run benchmarks/main.exs",
-        test: [&start_epmd/1, "test"]
       ]
     ]
   end