diff --git a/config.go b/config.go
index f01ce53..c8038c6 100644
--- a/config.go
+++ b/config.go
@@ -4,6 +4,7 @@ import (
 	"crypto/tls"
 	"math"
 	"os"
+	"path/filepath"
 	"strings"
 	"time"
 
@@ -62,19 +63,31 @@ func (c *Config) InitDefaults() error { //nolint:gocyclo,gocognit
 		return errors.E(op, errors.Errorf("malformed grpc address, provided: %s", c.Listen))
 	}
 
-	for i := 0; i < len(c.Proto); i++ {
-		if c.Proto[i] == "" {
+	protos := make([]string, 0, len(c.Proto))
+	for _, path := range c.Proto {
+		if path == "" {
 			continue
 		}
 
-		if _, err := os.Stat(c.Proto[i]); err != nil {
+		if strings.ContainsAny(path, "*?[") {
+			files, err := filepath.Glob(path)
+			if err != nil {
+				return errors.E(op, err)
+			}
+			protos = append(protos, files...)
+			continue
+		}
+
+		if _, err := os.Stat(path); err != nil {
 			if os.IsNotExist(err) {
-				return errors.E(op, errors.Errorf("proto file '%s' does not exists", c.Proto[i]))
+				return errors.E(op, errors.Errorf("proto file '%s' does not exists", path))
 			}
 
 			return errors.E(op, err)
 		}
+		protos = append(protos, path)
 	}
+	c.Proto = protos
 
 	if c.EnableTLS() {
 		if _, err := os.Stat(c.TLS.Key); err != nil {
diff --git a/config_test.go b/config_test.go
new file mode 100644
index 0000000..5ec9e2e
--- /dev/null
+++ b/config_test.go
@@ -0,0 +1,51 @@
+package grpc
+
+import (
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const separator = string(filepath.Separator)
+
+func TestInitDefaults(t *testing.T) {
+	c := Config{}
+	assert.Error(t, c.InitDefaults())
+
+	c.Listen = "localhost:1234"
+	assert.NoError(t, c.InitDefaults())
+
+	c.Proto = []string{""}
+	assert.NoError(t, c.InitDefaults())
+	assert.Empty(t, c.Proto)
+
+	c.Proto = []string{"parser/pong.proto"}
+	assert.NoError(t, c.InitDefaults())
+	assert.Equal(t, []string{"parser/pong.proto"}, c.Proto)
+
+	c.Proto = []string{"parser/nonexitent*.notproto"}
+	assert.NoError(t, c.InitDefaults())
+	assert.Empty(t, c.Proto)
+
+	c.Proto = []string{"config.go", "parser/*.proto"}
+	assert.NoError(t, c.InitDefaults())
+	assert.Equal(t, []string{
+		"config.go",
+		"parser" + separator + "message.proto",
+		"parser" + separator + "pong.proto",
+		"parser" + separator + "test.proto",
+		"parser" + separator + "test_import.proto",
+	}, c.Proto)
+
+	c.Proto = []string{"parser/?est.proto"}
+	assert.NoError(t, c.InitDefaults())
+	assert.Equal(t, []string{"parser" + separator + "test.proto"}, c.Proto)
+
+	c.Proto = []string{"parser/[tb]est.proto"}
+	assert.NoError(t, c.InitDefaults())
+	assert.Equal(t, []string{"parser" + separator + "test.proto"}, c.Proto)
+
+	c.Proto = []string{"[[[error"}
+	assert.Error(t, c.InitDefaults())
+}
diff --git a/go.work.sum b/go.work.sum
index 57f72c3..ee26478 100644
--- a/go.work.sum
+++ b/go.work.sum
@@ -230,6 +230,7 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
 github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4 h1:hzAQntlaYRkVSFEfj9OTWlVV1H155FMD8BTKktLv0QI=
 github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1 h1:zH8ljVhhq7yC0MIeUL/IviMtY8hx2mK8cN9wEYb8ggw=
 github.com/creack/pty v1.1.9 h1:uDmaGzcdjhF4i/plgjmEsriH11Y0o7RKapEf/LDaM3w=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
@@ -281,6 +282,7 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/pty v1.1.1 h1:VkoXIwSboBpnk99O/KFauAEILuNHv5DVFKZMBN/gUgw=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
 github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
 github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
@@ -293,6 +295,8 @@ github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:
 github.com/roadrunner-server/endure/v2 v2.0.1 h1:2greoQ669iCjsYNt14dwXXQGHAKDmLtFzL0OIE0ZATc=
 github.com/roadrunner-server/endure/v2 v2.0.1/go.mod h1:RDrC9SFlyCGqGA2v9SqFIA+EqWTFmPxafIb4SMeHCHM=
 github.com/rogpeppe/go-internal v1.3.0 h1:RR9dF3JtopPvtkroDZuVD7qquD0bnHlKSqaQhgwt8yk=
+github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
+github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=