diff --git a/main.go b/main.go
index 18bb5a4..be6c92a 100644
--- a/main.go
+++ b/main.go
@@ -334,7 +334,7 @@ func licenseHeader(path string, tmpl *template.Template, data licenseData) ([]by
 		".py", ".pyx", ".pxd",
 		".raku",
 		".rb", ".ru", "gemfile",
-		".sh", ".bash", ".zsh",
+		".sh", ".bash", ".zsh", ".bats",
 		".tcl",
 		".tf",
 		".toml",
diff --git a/main_test.go b/main_test.go
index 5adb4ed..09457ce 100644
--- a/main_test.go
+++ b/main_test.go
@@ -358,7 +358,7 @@ func TestLicenseHeader(t *testing.T) {
 				"f.py", "f.pyx", "f.pxd",
 				"f.raku",
 				"f.rb", "f.ru", "gemfile",
-				"f.sh", "f.bash", "f.zsh",
+				"f.sh", "f.bash", "f.zsh", "f.bats",
 				"f.tcl",
 				"f.tf",
 				"f.toml",
diff --git a/testdata/expected/file.bats b/testdata/expected/file.bats
new file mode 100644
index 0000000..d6a4f98
--- /dev/null
+++ b/testdata/expected/file.bats
@@ -0,0 +1,19 @@
+#!/usr/bin/env bats
+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+setup() {
+    
+}
\ No newline at end of file
diff --git a/testdata/initial/file.bats b/testdata/initial/file.bats
new file mode 100644
index 0000000..fdb7190
--- /dev/null
+++ b/testdata/initial/file.bats
@@ -0,0 +1,5 @@
+#!/usr/bin/env bats
+
+setup() {
+    
+}
\ No newline at end of file