diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8339616..8e8bb7f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,10 +7,11 @@ jobs:
     strategy:
       matrix:
         elixir:
+          - 1.15-25
           - 1.15-26
-          - 1.15-27
+          - 1.16-25
           - 1.16-26
-          - 1.16-27
+          - 1.17-25
           - 1.17-26
           - 1.17-27
     env:
@@ -44,8 +45,8 @@ jobs:
         run: mix credo --strict
         env:
           MIX_ENV: test
-      - name: Run Tests & Coverage Analysis
-        run: mix coveralls.github --trace
+      - name: Run Tests
+        run: mix test --trace
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
   build:
@@ -54,3 +55,36 @@ jobs:
     steps:
       - name: Pass all checks
         run: echo "Tests passed"
+  coverage:
+    runs-on: ubuntu-latest
+    env:
+      MIX_ENV: test
+    steps:
+      - name: Set Elixir and OTP versions
+        id: elixir-otp
+        run: |
+          echo "elixir=$(sed 's/-.*$//' <<< $version)" >> $GITHUB_OUTPUT
+          echo "otp=$(sed 's/^.*-//' <<< $version)" >> $GITHUB_OUTPUT
+        env:
+          version: "1.17-27"
+      - uses: actions/checkout@v2
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: ${{ steps.elixir-otp.outputs.otp }}
+          elixir-version: ${{ steps.elixir-otp.outputs.elixir }}
+      - name: Cache Elixir dependencies
+        uses: actions/cache@v2
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-deps-${{ steps.elixir-otp.outputs.elixir }}-${{ steps.elixir-otp.outputs.otp }}-${{ hashFiles('mix.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-deps-${{ steps.elixir-otp.outputs.elixir }}-${{ steps.elixir-otp.outputs.otp }}-${{ hashFiles('mix.lock') }}
+            ${{ runner.os }}-deps-${{ steps.elixir-otp.outputs.elixir }}-${{ steps.elixir-otp.outputs.otp }}-
+      - name: Install Dependencies
+        run: mix do deps.get, deps.compile
+      - name: Run Tests & Coverage Analysis
+        run: mix coveralls.github --trace
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/lib/edtf.ex b/lib/edtf.ex
index 79f11cf..e731d42 100644
--- a/lib/edtf.ex
+++ b/lib/edtf.ex
@@ -3,7 +3,7 @@ defmodule EDTF do
   Parse, validate, and humanize EDTF date strings
   """
 
-  alias EDTF.{Date, Interval, Aggregate}
+  alias EDTF.{Aggregate, Date, Interval}
 
   @doc """
   Parse an EDTF date string
diff --git a/mix.exs b/mix.exs
index 591125a..1a412c0 100644
--- a/mix.exs
+++ b/mix.exs
@@ -46,7 +46,7 @@ defmodule EDTF.MixProject do
   # Run "mix help deps" to learn about dependencies.
   defp deps do
     [
-      {:credo, "~> 1.7", only: [:dev, :text], runtime: false},
+      {:credo, "~> 1.7", only: [:dev, :test], runtime: false},
       {:ex_doc, "~> 0.34", only: :dev, runtime: false},
       {:excoveralls, "~> 0.18", only: [:dev, :test], runtime: false},
       {:inflex, "~> 2.1"}