diff --git a/.commitlint-scope.yaml b/.commitlint-scope.yaml
new file mode 100644
index 0000000..409b60f
--- /dev/null
+++ b/.commitlint-scope.yaml
@@ -0,0 +1,21 @@
+#$schema: https://github.com/thumbrise/commitlint-scope/blob/main/docs/schema/config.v3.json
+
+# Scope parsing customization. Not required, if you follow common conventional header. In example: 'type!(scope): subject'
+#scopeRegex: ^[a-z]+(?:\((?P<scope>[^)]+)\))?!?:\s
+
+# Patterns list: each item specifies a list of scopes and the corresponding file glob patterns.
+patterns:
+#  - scopes: ["auth"]
+#    files: ["services/auth/**"]
+#
+#  - scopes: ["migrations", "sql"]
+#    files: ["database/migrations/*.sql"]
+#
+#  - scopes: ["frontend", "assets"]
+#    files: ["**/assets/**", "**/frontend/**"]
+#
+#  - scopes: ["docs", "md"]
+#    files: ["**/*.md"]
+#
+#  - scopes: ["some.dot.scope", "any-anotherscope"]
+#    files: ["**/rail.v1.json"]
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6bdc837..f4e1458 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
           args: --help
 
       - name: Run lint
-        run: task lint
+        run: golangci-lint run
 
   commitlint:
     name: Lint commit messages
@@ -59,6 +59,25 @@ jobs:
       - name: Validate PR commits with commitlint
         run: npx commitlint --from ${{ github.event.pull_request.base.sha }} --to ${{ github.event.pull_request.head.sha }} --verbose
 
+  commitlint-scope:
+    name: Lint commit scopes
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0
+
+      - name: Lint commit scopes
+        run: |
+          docker run --rm \
+            -v "${{ github.workspace }}:/repo" \
+            -w /repo \
+            thumbrise/commitlint-scope:latest-alpine \
+            run \
+            --from ${{ github.event.pull_request.base.sha }} \
+            --to ${{ github.event.pull_request.head.sha }} \
+            --verbose
+
   test:
     name: Test
     runs-on: ubuntu-latest
diff --git a/README.md b/README.md
index 314f4d5..48c6928 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,7 @@ docker run --rm -v "$(pwd):/repo" -w /repo thumbrise/commitlint-scope:latest-alp
 
 ### Init
 
-Generate .commitlint-scope.yml file.
+Generate .commitlint-scope.yaml file.
 
 ```shell
 commitlint-scope init
diff --git a/Taskfile.yaml b/Taskfile.yaml
index 61ede0b..dd1bffb 100644
--- a/Taskfile.yaml
+++ b/Taskfile.yaml
@@ -10,6 +10,7 @@ tasks:
   lint:
     desc: Run lint with auto-fix where possible (dev workflow)
     cmds:
+      - docker run --rm -v "$(pwd):/repo" -w /repo thumbrise/commitlint-scope:latest-alpine run --from main --to HEAD
       - golangci-lint run --fix
 
   test:
diff --git a/cmd/commands/init.go b/cmd/commands/init.go
index 7530401..4a76015 100644
--- a/cmd/commands/init.go
+++ b/cmd/commands/init.go
@@ -40,7 +40,7 @@ patterns:
 `
 
 const (
-	InitConfigFileName = validator.ConfigName + ".yml"
+	InitConfigFileName = validator.ConfigName + ".yaml"
 	InitConfigFileMode = 0o600
 )
 
diff --git a/go.mod b/go.mod
index 18e1f32..92599e6 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,9 @@ require (
 	github.com/fatih/color v1.19.0
 	github.com/go-viper/mapstructure/v2 v2.5.0
 	github.com/gobwas/glob v0.2.3
-	github.com/spf13/viper v1.21.0
+	github.com/knadh/koanf/parsers/yaml v1.1.0
+	github.com/knadh/koanf/providers/file v1.2.1
+	github.com/knadh/koanf/v2 v2.3.2
 	github.com/stretchr/testify v1.11.1
 	github.com/urfave/cli/v3 v3.9.0
 )
@@ -21,28 +23,19 @@ require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jedib0t/go-pretty/v6 v6.7.8 // indirect
 	github.com/knadh/koanf/maps v0.1.2 // indirect
-	github.com/knadh/koanf/parsers/yaml v1.1.0 // indirect
 	github.com/knadh/koanf/providers/env v1.1.0 // indirect
-	github.com/knadh/koanf/providers/file v1.2.1 // indirect
 	github.com/knadh/koanf/providers/posflag v1.0.1 // indirect
 	github.com/knadh/koanf/providers/structs v1.0.0 // indirect
-	github.com/knadh/koanf/v2 v2.3.2 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.19 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/rs/zerolog v1.34.0 // indirect
-	github.com/sagikazarmark/locafero v0.11.0 // indirect
-	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
-	github.com/spf13/afero v1.15.0 // indirect
-	github.com/spf13/cast v1.10.0 // indirect
 	github.com/spf13/cobra v1.10.2 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/stretchr/objx v0.5.3 // indirect
-	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/vektra/mockery/v3 v3.7.0 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
diff --git a/go.sum b/go.sum
index 5d4f527..f83af5a 100644
--- a/go.sum
+++ b/go.sum
@@ -11,8 +11,6 @@ github.com/fatih/color v1.19.0 h1:Zp3PiM21/9Ld6FzSKyL5c/BULoe/ONr9KlbYVOfG8+w=
 github.com/fatih/color v1.19.0/go.mod h1:zNk67I0ZUT1bEGsSGyCZYZNrHuTkJJB+r6Q9VuMi0LE=
 github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
-github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
-github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
 github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
 github.com/go-viper/mapstructure/v2 v2.5.0 h1:vM5IJoUAy3d7zRSVtIwQgBj7BiWtMPfmPEgAXnvj1Ro=
@@ -59,8 +57,6 @@ github.com/mitchellh/copystructure v1.2.0 h1:vpKXTN4ewci03Vljg/q9QvCGUDttBOGBIa1
 github.com/mitchellh/copystructure v1.2.0/go.mod h1:qLl+cE2AmVv+CoeAwDPye/v+N2HKCj9FbZEVFJRxO9s=
 github.com/mitchellh/reflectwalk v1.0.2 h1:G2LzWKi524PWgd3mLHV8Y5k7s6XUvT0Gef6zxSIeXaQ=
 github.com/mitchellh/reflectwalk v1.0.2/go.mod h1:mSTlrgnPZtwu0c4WaC2kGObEpuNDbx0jmZXqmk4esnw=
-github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
-github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
@@ -71,29 +67,17 @@ github.com/rs/xid v1.6.0/go.mod h1:7XoLgs4eV+QndskICGsho+ADou8ySMSjJKDIan90Nz0=
 github.com/rs/zerolog v1.34.0 h1:k43nTLIwcTVQAncfCw4KZ2VY6ukYoZaBPNOE8txlOeY=
 github.com/rs/zerolog v1.34.0/go.mod h1:bJsvje4Z08ROH4Nhs5iH600c3IkWhwp44iRc54W6wYQ=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/sagikazarmark/locafero v0.11.0 h1:1iurJgmM9G3PA/I+wWYIOw/5SyBtxapeHDcg+AAIFXc=
-github.com/sagikazarmark/locafero v0.11.0/go.mod h1:nVIGvgyzw595SUSUE6tvCp3YYTeHs15MvlmU87WwIik=
-github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 h1:+jumHNA0Wrelhe64i8F6HNlS8pkoyMv5sreGx2Ry5Rw=
-github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8/go.mod h1:3n1Cwaq1E1/1lhQhtRK2ts/ZwZEhjcQeJQ1RuC6Q/8U=
-github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
-github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
-github.com/spf13/cast v1.10.0 h1:h2x0u2shc1QuLHfxi+cTJvs30+ZAHOGRic8uyGTDWxY=
-github.com/spf13/cast v1.10.0/go.mod h1:jNfB8QC9IA6ZuY2ZjDp0KtFO2LZZlg4S/7bzP6qqeHo=
 github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
 github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
 github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/spf13/viper v1.21.0 h1:x5S+0EU27Lbphp4UKm1C+1oQO+rKx36vfCoaVebLFSU=
-github.com/spf13/viper v1.21.0/go.mod h1:P0lhsswPGWD/1lZJ9ny3fYnVqxiegrlNrEmgLjbTCAY=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.5.3 h1:jmXUvGomnU1o3W/V5h2VEradbpJDwGrzugQQvL0POH4=
 github.com/stretchr/objx v0.5.3/go.mod h1:rDQraq+vQZU7Fde9LOZLr8Tax6zZvy4kuNKF+QYS+U0=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
-github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
-github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
 github.com/urfave/cli/v3 v3.9.0 h1:AV9lIiPv3ukYnxunaCUsHnEozptYmDN2F0+yWqLMn/c=
 github.com/urfave/cli/v3 v3.9.0/go.mod h1:ysVLtOEmg2tOy6PknnYVhDoouyC/6N42TMeoMzskhso=
 github.com/vektra/mockery/v3 v3.7.0 h1:Dd0EeaOcRJBVP9n3oYOVPV7KdPaaE3EcwTppaZIsFSM=
diff --git a/pkg/validator/config.go b/pkg/validator/config.go
index a7cce16..8cca906 100644
--- a/pkg/validator/config.go
+++ b/pkg/validator/config.go
@@ -3,61 +3,70 @@ package validator
 import (
 	"errors"
 	"fmt"
+	"os"
 	"reflect"
 	"regexp"
 
 	"github.com/go-viper/mapstructure/v2"
-	"github.com/spf13/viper"
+	"github.com/knadh/koanf/parsers/yaml"
+	"github.com/knadh/koanf/providers/file"
+	"github.com/knadh/koanf/v2"
 )
 
-const ConfigName = ".commitlint-scope"
+const ConfigName = ".commitlint-scope.yaml"
 
 type PatternItem struct {
-	Scopes []string `mapstructure:"scopes"`
-	Files  []string `mapstructure:"files"`
+	Scopes []string `koanf:"scopes"`
+	Files  []string `koanf:"files"`
 }
 
 type Config struct {
-	ScopeRegex *regexp.Regexp `mapstructure:"scopeRegex"`
-	Patterns   []PatternItem  `mapstructure:"patterns"`
+	ScopeRegex *regexp.Regexp `koanf:"scopeRegex"`
+	Patterns   []PatternItem  `koanf:"patterns"`
 }
 
-var ErrConfigRead = errors.New("error reading config")
+var (
+	ErrConfigRead  = errors.New("error reading config")
+	ErrRegexDecode = errors.New("expected string for regexp decode")
+)
 
 func LoadConfig() (Config, error) {
-	v := viper.New()
-	v.SetConfigName(ConfigName)
-	v.AddConfigPath(".")
-	v.SetDefault("scopeRegex", regexp.MustCompile(`^[a-z]+(?:\((?P<scope>[^)]+)\))?!?:\s`))
+	k := koanf.New(".")
 
-	var cfg Config
+	defaultRegex := `^[a-z]+(?:\((?P<scope>[^)]+)\))?!?:\s`
+	_ = k.Set("scopeRegex", defaultRegex)
 
-	if err := v.ReadInConfig(); err != nil {
-		if _, ok := errors.AsType[viper.ConfigFileNotFoundError](err); !ok {
+	if err := k.Load(file.Provider(ConfigName), yaml.Parser()); err != nil {
+		if !os.IsNotExist(err) {
 			return Config{}, fmt.Errorf("%w: %w", ErrConfigRead, err)
 		}
 	}
 
-	if err := v.Unmarshal(&cfg, regexDecode); err != nil {
+	var cfg Config
+
+	unmarshalConf := koanf.UnmarshalConf{
+		DecoderConfig: &mapstructure.DecoderConfig{
+			Result:     &cfg,
+			DecodeHook: regexDecodeHook,
+		},
+	}
+
+	if err := k.UnmarshalWithConf("", &cfg, unmarshalConf); err != nil {
 		return Config{}, fmt.Errorf("%w: %w", ErrConfigRead, err)
 	}
 
 	return cfg, nil
 }
 
-var ErrRegexDecode = errors.New("expected string for regexp decode")
-
-func regexDecode(cfg *mapstructure.DecoderConfig) {
-	cfg.DecodeHook = func(from reflect.Type, to reflect.Type, data interface{}) (interface{}, error) {
-		if from.Kind() == reflect.String && to == reflect.TypeOf(&regexp.Regexp{}) {
-			val, ok := data.(string)
-			if !ok {
-				return nil, fmt.Errorf("%w got %T", ErrRegexDecode, data)
-			}
-
-			return regexp.Compile(val)
+func regexDecodeHook(from reflect.Type, to reflect.Type, data interface{}) (interface{}, error) {
+	if from.Kind() == reflect.String && to == reflect.TypeOf(&regexp.Regexp{}) {
+		val, ok := data.(string)
+		if !ok {
+			return nil, fmt.Errorf("%w got %T", ErrRegexDecode, data)
 		}
 
-		return data, nil
+		return regexp.Compile(val)
 	}
+
+	return data, nil
 }
diff --git a/pkg/validator/config_test.go b/pkg/validator/config_test.go
index 36ba475..c18087c 100644
--- a/pkg/validator/config_test.go
+++ b/pkg/validator/config_test.go
@@ -88,7 +88,7 @@ patterns:
 			require.NoError(t, os.Chdir(dir))
 
 			if tt.yaml != "" {
-				err = os.WriteFile(filepath.Join(dir, ".commitlint-scope.yaml"), []byte(tt.yaml), 0o644)
+				err = os.WriteFile(filepath.Join(dir, validator.ConfigName), []byte(tt.yaml), 0o644)
 				require.NoError(t, err)
 			}