diff --git a/.github/workflows/elixir.yml b/.github/workflows/elixir.yml
index 10b509e..c5501f5 100644
--- a/.github/workflows/elixir.yml
+++ b/.github/workflows/elixir.yml
@@ -7,7 +7,7 @@ env:
   ELIXIR_VERSION: "1.14.0"
 jobs:
   lint:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     name: Lint OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
     strategy:
       matrix:
@@ -23,7 +23,7 @@ jobs:
 
       - name: Cache Dependencies
         id: mix-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             deps
@@ -42,18 +42,17 @@ jobs:
       - run: mix deps.get
       - run: mix deps.unlock --check-unused
       - run: mix format --check-formatted
+      - run: (cd go_src/ && test -z $(gofmt -l .))
       - run: mix compile --warnings-as-errors
       - run: mix credo --strict
       - run: mix dialyzer --plt
 
   linux:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     name: Linux OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
     strategy:
       matrix:
         include:
-          - elixir: 1.12.x
-            otp: 23.x
           - elixir: 1.13.x
             otp: 24.x
           - elixir: 1.14.x
@@ -61,7 +60,7 @@ jobs:
           - elixir: 1.15.x
             otp: 26.x
           - elixir: 1.16.x
-            otp: 26.x
+            otp: 27.x
     steps:
       - uses: erlef/setup-beam@v1
         with:
@@ -71,7 +70,7 @@ jobs:
 
       - name: Cache Dependencies
         id: mix-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             deps
@@ -89,7 +88,7 @@ jobs:
       - run: mix test --trace
 
   macos:
-    runs-on: macos-11
+    runs-on: macos-14
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@main
@@ -100,23 +99,23 @@ jobs:
       - run: nix develop --command mix test --trace
 
   windows:
-    runs-on: windows-2019
+    runs-on: windows-latest
     name: Windows OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}
     strategy:
       matrix:
         include:
-          - elixir: "1.14"
-            otp: "25"
+          - elixir: "1.17"
+            otp: "27"
     steps:
       - uses: erlef/setup-beam@v1
         with:
           otp-version: ${{matrix.otp}}
           elixir-version: ${{matrix.elixir}}
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Cache Dependencies
         id: mix-cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: |
             deps
diff --git a/go_src/executor.go b/go_src/executor.go
index 9ddd12a..0ddd5c0 100644
--- a/go_src/executor.go
+++ b/go_src/executor.go
@@ -75,7 +75,7 @@ func execute(workdir string, args []string, stderrConfig string) error {
 	return err
 }
 
-func runPipeline(proc *exec.Cmd, writerDone chan struct{}, stdinClose chan struct{}, kill chan<- bool, stderrConfig string){
+func runPipeline(proc *exec.Cmd, writerDone chan struct{}, stdinClose chan struct{}, kill chan<- bool, stderrConfig string) {
 	cmdInput := make(chan []byte, 1)
 	cmdOutputDemand := make(chan Packet)
 	cmdInputDemand := make(chan Packet)
@@ -183,7 +183,7 @@ func stdoutWriter(pid int, cmdStdout <-chan []byte, cmdInputDemand <-chan Packet
 
 			if len(data) > BufferSize {
 				fatal("Invalid payloadLen")
-			} else if (len(data) == 0) {
+			} else if len(data) == 0 {
 				// if we are getting EOF then we are done here
 				// there won't be anymore command coming
 				writePacketToStdout(OutputEOF, make([]byte, 0))
@@ -229,7 +229,7 @@ func safeExit(proc *exec.Cmd, procErr <-chan error, kill <-chan bool, timeout ti
 	case err := <-procErr:
 		logger.Printf("Cmd completed with err: %v", err)
 		return err
-	case <- kill:
+	case <-kill:
 		if err := proc.Process.Kill(); err != nil {
 			logger.Fatal("failed to kill process: ", err)
 			return err
diff --git a/go_src/exit_status.go b/go_src/exit_status.go
index a774233..3206fa2 100644
--- a/go_src/exit_status.go
+++ b/go_src/exit_status.go
@@ -1,3 +1,4 @@
+//go:build !plan9
 // +build !plan9
 
 package main
diff --git a/go_src/main.go b/go_src/main.go
index 1bf37b0..10f8545 100644
--- a/go_src/main.go
+++ b/go_src/main.go
@@ -1,10 +1,10 @@
 package main
 
 import (
-	"os/exec"
 	"flag"
 	"fmt"
 	"os"
+	"os/exec"
 )
 
 // Version of the odu
@@ -53,7 +53,7 @@ func main() {
 		// This shouldn't really happen in practice because we check for
 		// program existence in Elixir, before launching odu
 		logger.Printf("Command exited with error: %v", exitError)
-	} else  {
+	} else {
 		logger.Printf("Command exited with unknown errors", err)
 	}
 
diff --git a/go_src/process.go b/go_src/process.go
index 7eb8f17..99a48a3 100644
--- a/go_src/process.go
+++ b/go_src/process.go
@@ -35,7 +35,7 @@ func startCommandPipeline(proc *exec.Cmd, input <-chan []byte, inputDemand chan<
 	return output
 }
 
-func writeToCommandStdin(cmdInput io.WriteCloser, input <- chan []byte, inputDemand chan<- Packet) {
+func writeToCommandStdin(cmdInput io.WriteCloser, input <-chan []byte, inputDemand chan<- Packet) {
 	var data []byte
 	var ok bool
 
diff --git a/mix.exs b/mix.exs
index c8f7376..4d543f7 100644
--- a/mix.exs
+++ b/mix.exs
@@ -12,6 +12,7 @@ defmodule ExCmd.MixProject do
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       compilers: Mix.compilers() ++ [:odu],
+      aliases: aliases(),
 
       # Ensure dialyzer sees mix modules
       dialyzer: [plt_add_apps: [:mix]],
@@ -53,10 +54,17 @@ defmodule ExCmd.MixProject do
     ]
   end
 
-  defp deps do
+  defp aliases do
     [
-      {:gen_state_machine, "~> 3.0"},
+      format: [
+        "format",
+        "cmd --cd go_src/ go fmt"
+      ]
+    ]
+  end
 
+  defp deps do
+    [
       # development & test
       {:credo, "~> 1.6", only: [:dev, :test], runtime: false},
       {:dialyxir, "~> 1.0", only: [:dev], runtime: false},
diff --git a/mix.lock b/mix.lock
index 69e3c90..0736b5c 100644
--- a/mix.lock
+++ b/mix.lock
@@ -6,7 +6,6 @@
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
   "ex_doc": {:hex, :ex_doc, "0.34.1", "9751a0419bc15bc7580c73fde506b17b07f6402a1e5243be9e0f05a68c723368", [:mix], [{:earmark_parser, "~> 1.4.39", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_c, ">= 0.1.0", [hex: :makeup_c, repo: "hexpm", optional: true]}, {:makeup_elixir, "~> 0.14 or ~> 1.0", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1 or ~> 1.0", [hex: :makeup_erlang, repo: "hexpm", optional: false]}, {:makeup_html, ">= 0.1.0", [hex: :makeup_html, repo: "hexpm", optional: true]}], "hexpm", "d441f1a86a235f59088978eff870de2e815e290e44a8bd976fe5d64470a4c9d2"},
   "file_system": {:hex, :file_system, "1.0.0", "b689cc7dcee665f774de94b5a832e578bd7963c8e637ef940cd44327db7de2cd", [:mix], [], "hexpm", "6752092d66aec5a10e662aefeed8ddb9531d79db0bc145bb8c40325ca1d8536d"},
-  "gen_state_machine": {:hex, :gen_state_machine, "3.0.0", "1e57f86a494e5c6b14137ebef26a7eb342b3b0070c7135f2d6768ed3f6b6cdff", [:mix], [], "hexpm", "0a59652574bebceb7309f6b749d2a41b45fdeda8dbb4da0791e355dd19f0ed15"},
   "jason": {:hex, :jason, "1.4.1", "af1504e35f629ddcdd6addb3513c3853991f694921b1b9368b0bd32beb9f1b63", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "fbb01ecdfd565b56261302f7e1fcc27c4fb8f32d56eab74db621fc154604a7a1"},
   "makeup": {:hex, :makeup, "1.1.2", "9ba8837913bdf757787e71c1581c21f9d2455f4dd04cfca785c70bbfff1a76a3", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "cce1566b81fbcbd21eca8ffe808f33b221f9eee2cbc7a1706fc3da9ff18e6cac"},
   "makeup_elixir": {:hex, :makeup_elixir, "0.16.2", "627e84b8e8bf22e60a2579dad15067c755531fea049ae26ef1020cad58fe9578", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "41193978704763f6bbe6cc2758b84909e62984c7752b3784bd3c218bb341706b"},