diff --git a/addlicense/main.go b/addlicense/main.go
index 0522dcd..68c291c 100644
--- a/addlicense/main.go
+++ b/addlicense/main.go
@@ -32,7 +32,7 @@ import (
 	"text/template"
 	"time"
 
-	doublestar "github.com/bmatcuk/doublestar/v4"
+	"github.com/bmatcuk/doublestar/v4"
 	"golang.org/x/sync/errgroup"
 )
 
@@ -366,7 +366,7 @@ func licenseHeader(path string, tmpl *template.Template, data LicenseData) ([]by
 		lic, err = executeTemplate(tmpl, data, "/**", " * ", " */")
 	case ".cc", ".cpp", ".cs", ".go", ".hh", ".hpp", ".m", ".mm", ".proto", ".rs", ".swift", ".dart", ".groovy", ".v", ".sv", ".lr":
 		lic, err = executeTemplate(tmpl, data, "", "// ", "")
-	case ".py", ".sh", ".bash", ".zsh", ".yaml", ".yml", ".dockerfile", "dockerfile", ".rb", "gemfile", ".ru", ".tcl", ".hcl", ".tf", ".tfvars", ".nomad", ".bzl", ".pl", ".pp", ".ps1", ".psd1", ".psm1":
+	case ".py", ".sh", ".bash", ".zsh", ".yaml", ".yml", ".dockerfile", "dockerfile", ".rb", "gemfile", ".ru", ".tcl", ".hcl", ".tf", ".tfvars", ".nomad", ".bzl", ".pl", ".pp", ".ps1", ".psd1", ".psm1", ".txtar":
 		lic, err = executeTemplate(tmpl, data, "", "# ", "")
 	case ".el", ".lisp":
 		lic, err = executeTemplate(tmpl, data, "", ";; ", "")
diff --git a/addlicense/main_test.go b/addlicense/main_test.go
index 46b183c..89d406b 100644
--- a/addlicense/main_test.go
+++ b/addlicense/main_test.go
@@ -318,7 +318,7 @@ func TestLicenseHeader(t *testing.T) {
 			"// HYS\n\n",
 		},
 		{
-			[]string{"f.py", "f.sh", ".bash", ".zsh", "f.yaml", "f.yml", "f.dockerfile", "dockerfile", "f.rb", "gemfile", ".ru", "f.tcl", "f.bzl", "f.pl", "f.pp", "f.ps1", "f.psd1", "f.psm1", "f.hcl", "f.tf", "f.nomad", "f.tfvars"},
+			[]string{"f.py", "f.sh", ".bash", ".zsh", "f.yaml", "f.yml", "f.dockerfile", "dockerfile", "f.rb", "gemfile", ".ru", "f.tcl", "f.bzl", "f.pl", "f.pp", "f.ps1", "f.psd1", "f.psm1", "f.hcl", "f.tf", "f.nomad", "f.tfvars", "f.txtar"},
 			"# HYS\n\n",
 		},
 		{