diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4cd250b..5d4bb5d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -2,10 +2,10 @@ name: Test and Lint
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   test:
@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.17
+          go-version: 1.19
       - name: Run Tests
         run: go test -v ./...
 
@@ -32,9 +32,9 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.17
+          go-version: 1.19
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.48.0
+          version: v1.52.0
           args: --enable=gofumpt,goimports,whitespace,gocritic,exportloopref,unconvert,prealloc
diff --git a/go.mod b/go.mod
index 14a2a21..56d73fe 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,5 @@
 module github.com/amenzhinsky/go-memexec
 
-go 1.17
+go 1.19
 
 require golang.org/x/sys v0.0.0-20210903071746-97244b99971b
diff --git a/memexec_linux.go b/memexec_linux.go
index 17de936..911336d 100644
--- a/memexec_linux.go
+++ b/memexec_linux.go
@@ -15,7 +15,7 @@ func open(b []byte) (*os.File, error) {
 	if err != nil {
 		return nil, err
 	}
-	f := os.NewFile(uintptr(fd), fmt.Sprintf("/proc/self/fd/%d", fd))
+	f := os.NewFile(uintptr(fd), fmt.Sprintf("/proc/%d/fd/%d", os.Getpid(), fd))
 	if _, err := f.Write(b); err != nil {
 		_ = f.Close()
 		return nil, err
diff --git a/memexec_test.go b/memexec_test.go
index b04bbe3..5eadca6 100644
--- a/memexec_test.go
+++ b/memexec_test.go
@@ -1,6 +1,7 @@
 package memexec
 
 import (
+	"bytes"
 	"context"
 	"os"
 	"os/exec"
@@ -24,6 +25,26 @@ func TestCommand(t *testing.T) {
 	}
 }
 
+func TestCommand_Shell(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		return
+	}
+
+	exe, err := New([]byte("#!/bin/sh\necho hello"))
+	if err != nil {
+		panic(err)
+	}
+	defer exe.Close()
+
+	b, err := exe.Command().CombinedOutput()
+	if err != nil {
+		t.Fatalf("err = %v, output = %q", err, b)
+	}
+	if !bytes.Equal(b, []byte("hello\n")) {
+		t.Fatalf("output = %q, want %q", string(b), []byte("hello\n"))
+	}
+}
+
 func TestCommandContext(t *testing.T) {
 	// the test is failing on windows, probably due to missing sleep command,
 	// unfortunately I have no windows machines around to fix this
@@ -104,7 +125,7 @@ func runCommand(t *testing.T, cmd *exec.Cmd) string {
 	b, err := cmd.CombinedOutput()
 	if err != nil {
 		if b != nil {
-			t.Fatal(string(b))
+			t.Fatalf("failed to run: %q", string(b))
 		}
 		t.Fatal(err)
 	}