diff --git a/.github/workflows/elixir.yaml b/.github/workflows/elixir.yaml
new file mode 100644
index 0000000..45555a3
--- /dev/null
+++ b/.github/workflows/elixir.yaml
@@ -0,0 +1,115 @@
+name: Elixir CI
+
+# Define workflow that runs when changes are pushed to the
+# `main` branch or pushed to a PR branch that targets the `main`
+# branch. Change the branch name if your project uses a
+# different name for the main branch like "master" or "production".
+on:
+  push:
+    branches: [ "main" ]  # adapt branch for project
+  pull_request:
+    branches: [ "main" ]  # adapt branch for project
+
+# Sets the ENV `MIX_ENV` to `test` for running tests
+env:
+  MIX_ENV: test
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    # Set up a Postgres DB service. By default, Phoenix applications
+    # use Postgres. This creates a database for running tests.
+    # Additional services can be defined here if required.
+    services:
+      db:
+        image: postgres:12
+        ports: ['5432:5432']
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    runs-on: ubuntu-latest
+    name: Test on OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
+    strategy:
+      # Specify the OTP and Elixir versions to use when building
+      # and running the workflow steps.
+      matrix:
+        otp: ['25.2']
+        elixir: ['1.14.3']
+    steps:
+    # Step: Setup Elixir + Erlang image as the base.
+    - name: Set up Elixir
+      uses: erlef/setup-beam@v1
+      with:
+        otp-version: ${{matrix.otp}}
+        elixir-version: ${{matrix.elixir}}
+
+    # Step: Check out the code.
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    # Step: Define how to cache deps. Restores existing cache if present.
+    - name: Cache deps
+      id: cache-deps
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-elixir-deps
+      with:
+        path: deps
+        key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-mix-${{ env.cache-name }}-
+
+    # Step: Define how to cache the `_build` directory. After the first run,
+    # this speeds up tests runs a lot. This includes not re-compiling our
+    # project's downloaded deps every run.
+    - name: Cache compiled build
+      id: cache-build
+      uses: actions/cache@v3
+      env:
+        cache-name: cache-compiled-build
+      with:
+        path: _build
+        key: ${{ runner.os }}-mix-${{ env.cache-name }}-${{ hashFiles('**/mix.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-mix-${{ env.cache-name }}-
+          ${{ runner.os }}-mix-
+
+    # Step: Conditionally bust the cache when job is re-run.
+    # Sometimes, we may have issues with incremental builds that are fixed by
+    # doing a full recompile. In order to not waste dev time on such trivial
+    # issues (while also reaping the time savings of incremental builds for
+    # *most* day-to-day development), force a full recompile only on builds
+    # that are retried.
+    - name: Clean to rule out incremental build as a source of flakiness
+      if: github.run_attempt != '1'
+      run: |
+        mix deps.clean --all
+        mix clean
+      shell: sh
+
+    # Step: Download project dependencies. If unchanged, uses
+    # the cached version.
+    - name: Install dependencies
+      run: mix deps.get
+
+    # Step: Compile the project treating any warnings as errors.
+    # Customize this step if a different behavior is desired.
+    - name: Compiles without warnings
+      run: mix compile --warnings-as-errors
+
+    # Step: Check that the checked in code has already been formatted.
+    # This step fails if something was found unformatted.
+    # Customize this step as desired.
+    - name: Check Formatting
+      run: mix format --check-formatted
+
+    # Step: Execute the tests.
+    - name: Run tests
+      run: mix test
diff --git a/mix.exs b/mix.exs
index 9e276cc..e21483b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -55,6 +55,8 @@ defmodule Aprs.MixProject do
       {:plug_cowboy, "~> 2.5"},
       {:esbuild, "~> 0.5", runtime: Mix.env() == :dev},
       {:tailwind, "~> 0.1.8", runtime: Mix.env() == :dev},
+      {:sobelow, "~> 0.8", only: :dev},
+      {:dialyxir, "~> 1.0", only: [:dev], runtime: false},
       {:credo, "~> 1.6.2", only: [:dev, :test], runtime: false},
       {:floki, ">= 0.30.0", only: :test},
       {:exvcr, "~> 0.13.4", only: [:test]},
diff --git a/mix.lock b/mix.lock
index 4d63d30..a4029f9 100644
--- a/mix.lock
+++ b/mix.lock
@@ -10,8 +10,10 @@
   "credo": {:hex, :credo, "1.6.7", "323f5734350fd23a456f2688b9430e7d517afb313fbd38671b8a4449798a7854", [:mix], [{:bunt, "~> 0.2.1", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "41e110bfb007f7eda7f897c10bf019ceab9a0b269ce79f015d54b0dcf4fc7dd3"},
   "db_connection": {:hex, :db_connection, "2.4.3", "3b9aac9f27347ec65b271847e6baeb4443d8474289bd18c1d6f4de655b70c94d", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "c127c15b0fa6cfb32eed07465e05da6c815b032508d4ed7c116122871df73c12"},
   "decimal": {:hex, :decimal, "2.0.0", "a78296e617b0f5dd4c6caf57c714431347912ffb1d0842e998e9792b5642d697", [:mix], [], "hexpm", "34666e9c55dea81013e77d9d87370fe6cb6291d1ef32f46a1600230b1d44f577"},
+  "dialyxir": {:hex, :dialyxir, "1.2.0", "58344b3e87c2e7095304c81a9ae65cb68b613e28340690dfe1a5597fd08dec37", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "61072136427a851674cab81762be4dbeae7679f85b1272b6d25c3a839aff8463"},
   "ecto": {:hex, :ecto, "3.9.4", "3ee68e25dbe0c36f980f1ba5dd41ee0d3eb0873bccae8aeaf1a2647242bffa35", [:mix], [{:decimal, "~> 1.6 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "de5f988c142a3aa4ec18b85a4ec34a2390b65b24f02385c1144252ff6ff8ee75"},
   "ecto_sql": {:hex, :ecto_sql, "3.9.2", "34227501abe92dba10d9c3495ab6770e75e79b836d114c41108a4bf2ce200ad5", [:mix], [{:db_connection, "~> 2.4.1 or ~> 2.5", [hex: :db_connection, repo: "hexpm", optional: false]}, {:ecto, "~> 3.9.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:myxql, "~> 0.6.0", [hex: :myxql, repo: "hexpm", optional: true]}, {:postgrex, "~> 0.16.0 or ~> 1.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:tds, "~> 2.1.1 or ~> 2.2", [hex: :tds, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.0 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "1eb5eeb4358fdbcd42eac11c1fbd87e3affd7904e639d77903c1358b2abd3f70"},
+  "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "esbuild": {:hex, :esbuild, "0.6.0", "9ba6ead054abd43cb3d7b14946a0cdd1493698ccd8e054e0e5d6286d7f0f509c", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}], "hexpm", "30f9a05d4a5bab0d3e37398f312f80864e1ee1a081ca09149d06d474318fd040"},
   "exactor": {:hex, :exactor, "2.2.4", "5efb4ddeb2c48d9a1d7c9b465a6fffdd82300eb9618ece5d34c3334d5d7245b1", [:mix], [], "hexpm", "1222419f706e01bfa1095aec9acf6421367dcfab798a6f67c54cf784733cd6b5"},
   "exjsx": {:hex, :exjsx, "4.0.0", "60548841e0212df401e38e63c0078ec57b33e7ea49b032c796ccad8cde794b5c", [:mix], [{:jsx, "~> 2.8.0", [hex: :jsx, repo: "hexpm", optional: false]}], "hexpm", "32e95820a97cffea67830e91514a2ad53b888850442d6d395f53a1ac60c82e07"},
@@ -52,6 +54,7 @@
   "plug_crypto": {:hex, :plug_crypto, "1.2.3", "8f77d13aeb32bfd9e654cb68f0af517b371fb34c56c9f2b58fe3df1235c1251a", [:mix], [], "hexpm", "b5672099c6ad5c202c45f5a403f21a3411247f164e4a8fab056e5cd8a290f4a2"},
   "postgrex": {:hex, :postgrex, "0.16.5", "fcc4035cc90e23933c5d69a9cd686e329469446ef7abba2cf70f08e2c4b69810", [:mix], [{:connection, "~> 1.1", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 2.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:table, "~> 0.1.0", [hex: :table, repo: "hexpm", optional: true]}], "hexpm", "edead639dc6e882618c01d8fc891214c481ab9a3788dfe38dd5e37fd1d5fb2e8"},
   "ranch": {:hex, :ranch, "1.8.0", "8c7a100a139fd57f17327b6413e4167ac559fbc04ca7448e9be9057311597a1d", [:make, :rebar3], [], "hexpm", "49fbcfd3682fab1f5d109351b61257676da1a2fdbe295904176d5e521a2ddfe5"},
+  "sobelow": {:hex, :sobelow, "0.11.1", "23438964486f8112b41e743bbfd402da3e5b296fdc9eacab29914b79c48916dd", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "9897363a7eff96f4809304a90aad819e2ad5e5d24db547af502885146746a53c"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
   "swoosh": {:hex, :swoosh, "1.9.1", "0a5d7bf9954eb41d7e55525bc0940379982b090abbaef67cd8e1fd2ed7f8ca1a", [:mix], [{:cowboy, "~> 1.1 or ~> 2.4", [hex: :cowboy, repo: "hexpm", optional: true]}, {:ex_aws, "~> 2.1", [hex: :ex_aws, repo: "hexpm", optional: true]}, {:finch, "~> 0.6", [hex: :finch, repo: "hexpm", optional: true]}, {:gen_smtp, "~> 0.13 or ~> 1.0", [hex: :gen_smtp, repo: "hexpm", optional: true]}, {:hackney, "~> 1.9", [hex: :hackney, repo: "hexpm", optional: true]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:mail, "~> 0.2", [hex: :mail, repo: "hexpm", optional: true]}, {:mime, "~> 1.1 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:plug_cowboy, ">= 1.0.0", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.2 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "76dffff3ffcab80f249d5937a592eaef7cc49ac6f4cdd27e622868326ed6371e"},
   "tailwind": {:hex, :tailwind, "0.1.9", "25ba09d42f7bfabe170eb67683a76d6ec2061952dc9bd263a52a99ba3d24bd4d", [:mix], [{:castore, ">= 0.0.0", [hex: :castore, repo: "hexpm", optional: false]}], "hexpm", "9213f87709c458aaec313bb5f2df2b4d2cedc2b630e4ae821bf3c54c47a56d0b"},