diff --git a/.github/workflows/dev_auto-pr-author-assign.yml b/.github/workflows/dev_auto-pr-author-assign.yml
index a37b1ef4b..6a44efe56 100644
--- a/.github/workflows/dev_auto-pr-author-assign.yml
+++ b/.github/workflows/dev_auto-pr-author-assign.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 # .github/workflows/auto-author-assign.yml
 name: Auto Author Assign
 
diff --git a/.github/workflows/dev_build_precache.yml b/.github/workflows/dev_build_precache.yml
index 14bfbff51..4a4ec2540 100644
--- a/.github/workflows/dev_build_precache.yml
+++ b/.github/workflows/dev_build_precache.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Build main, pre-alpha every 8 hours for dev
 env:
   MODULES_REGISTRY: ${{ vars.DEV_REGISTRY }}
diff --git a/.github/workflows/dev_module_build-and-registration.yml b/.github/workflows/dev_module_build-and-registration.yml
index 6387a501a..76c706fc6 100644
--- a/.github/workflows/dev_module_build-and-registration.yml
+++ b/.github/workflows/dev_module_build-and-registration.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Deploy Dev
 
 env:
diff --git a/.github/workflows/dev_module_build-on-self-hosted-runner.yml b/.github/workflows/dev_module_build-on-self-hosted-runner.yml
index 9829dff4e..61cb6cdd7 100644
--- a/.github/workflows/dev_module_build-on-self-hosted-runner.yml
+++ b/.github/workflows/dev_module_build-on-self-hosted-runner.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Build and push for dev (Self-hosted)
 
 env:
diff --git a/.github/workflows/dev_module_build.yml b/.github/workflows/dev_module_build.yml
index e7c3276fd..4c709083f 100644
--- a/.github/workflows/dev_module_build.yml
+++ b/.github/workflows/dev_module_build.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Build and push for dev
 
 env:
diff --git a/.github/workflows/dev_registry-cleanup.yml b/.github/workflows/dev_registry-cleanup.yml
index ab46c32d1..b5c150f65 100644
--- a/.github/workflows/dev_registry-cleanup.yml
+++ b/.github/workflows/dev_registry-cleanup.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Cleanup dev registries
 
 env:
diff --git a/.github/workflows/release_module_build-and-registration.yml b/.github/workflows/release_module_build-and-registration.yml
index fdb96f196..353cfe228 100644
--- a/.github/workflows/release_module_build-and-registration.yml
+++ b/.github/workflows/release_module_build-and-registration.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Build and push for prod
 
 env:
diff --git a/.github/workflows/release_module_release-channels.yml b/.github/workflows/release_module_release-channels.yml
index 3096e81c9..381248767 100644
--- a/.github/workflows/release_module_release-channels.yml
+++ b/.github/workflows/release_module_release-channels.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Deploy Prod
 
 env:
diff --git a/.github/workflows/release_release-please.yml b/.github/workflows/release_release-please.yml
index 91dee5f72..f45e94b1d 100644
--- a/.github/workflows/release_release-please.yml
+++ b/.github/workflows/release_release-please.yml
@@ -1,3 +1,17 @@
+# Copyright 2024 Flant JSC
+#
+# 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.
+
 name: Release please
 
 on:
diff --git a/tools/addlicense/addlicense_test.go b/tools/addlicense/addlicense_test.go
index a8d52ee85..8a29c8eb0 100644
--- a/tools/addlicense/addlicense_test.go
+++ b/tools/addlicense/addlicense_test.go
@@ -222,3 +222,75 @@ print("Hello")
 		})
 	}
 }
+
+func Test_FilesPathWithExtensionRe(t *testing.T) {
+	filePathCases := []struct {
+		title    string
+		filePath string
+	}{
+		{
+			title:    "Path .github with yaml extension",
+			filePath: "./.github/workflows/build.yaml",
+		},
+		{
+			title:    "Path with /some/folder/.github yaml extension",
+			filePath: "/some/folder/.github/workflows/build.yaml",
+		},
+		{
+			title:    "Path with ./.github yml extension",
+			filePath: "./.github/workflows/build.yml",
+		},
+		{
+			title:    "Path with sh extension",
+			filePath: "./run.sh",
+		},
+		{
+			title:    "Path with py extension",
+			filePath: "./scripts/run.py",
+		},
+		{
+			title:    "Path with go extension",
+			filePath: "./cmds/run.go",
+		},
+	}
+
+	for _, c := range filePathCases {
+		t.Run(c.title, func(t *testing.T) {
+			resFilePathMatch := fileToCheckRe.MatchString(c.filePath)
+			require.True(t, resFilePathMatch)
+
+			// Copyright is maintained for files with an extension
+			license := getLicenseForFile(c.filePath)
+			require.NotEmpty(t, license)
+			require.True(t, CELicenseRe.MatchString(license))
+		})
+	}
+}
+
+func Test_FilesPathNoExtensionRe(t *testing.T) {
+	filePathCases := []struct {
+		title    string
+		filePath string
+	}{
+		{
+			title:    "Path with no extension",
+			filePath: "./cmds/enable",
+		},
+		{
+			title:    "Path with no extension root dir",
+			filePath: "/enable",
+		},
+	}
+
+	for _, c := range filePathCases {
+		t.Run(c.title, func(t *testing.T) {
+			resFilePathMatch := fileToCheckRe.MatchString(c.filePath)
+			require.True(t, resFilePathMatch)
+
+			// Copyright is not maintained for files without an extension
+			license := getLicenseForFile(c.filePath)
+			require.Empty(t, license)
+			require.False(t, CELicenseRe.MatchString(license))
+		})
+	}
+}
diff --git a/tools/addlicense/utils.go b/tools/addlicense/utils.go
index ddbc75629..4929122bd 100644
--- a/tools/addlicense/utils.go
+++ b/tools/addlicense/utils.go
@@ -42,7 +42,7 @@ func getLicenseForFile(filePath string) string {
 	switch filepath.Ext(filePath) {
 	case ".go":
 		return goLicense
-	case ".py", ".sh", ".bash", ".zsh":
+	case ".py", ".sh", ".bash", ".zsh", ".yaml", ".yml":
 		return bashPythonLicense
 	default:
 		return ""
diff --git a/tools/addlicense/variables.go b/tools/addlicense/variables.go
index 1f261251a..ba8109f80 100644
--- a/tools/addlicense/variables.go
+++ b/tools/addlicense/variables.go
@@ -47,7 +47,7 @@ var (
 //   - Ends with .go, .sh, .py
 //   - Is inside a .github directory: scripts, workflows, or workflow_templates subdirectories,
 //     and ends with .js, .yml, .yaml, or .sh
-var fileToCheckRe = regexp.MustCompile(`\.go$|/[^/.]+$|\.sh$|\.py$|^\.github/(scripts|workflows|workflow_templates)/.+\.(js|yml|yaml|sh)$`)
+var fileToCheckRe = regexp.MustCompile(`\.go$|/[^/.]+$|\.sh$|\.py$|\.github/(scripts|workflows|workflow_templates)/.+\.(js|yml|yaml|sh)$`)
 
 // fileToSkipRe matches filenames that will be skipped for adding license, meet the following conditions:
 //   - Directories .github/CODEOWNERS, /docs/