diff --git a/auth/auth.go b/auth/auth.go
index 2a6ef86..e2ef788 100644
--- a/auth/auth.go
+++ b/auth/auth.go
@@ -17,9 +17,7 @@ const (
 	AZURE
 )
 
-var (
-	errAwsSession = errors.New("failed to create aws session")
-)
+var errAwsSession = errors.New("failed to create aws session")
 
 type Config struct {
 	Profile  string
@@ -51,7 +49,6 @@ func New(config Config) (*authorization, error) {
 		}
 		ath.sess = sess
 		ath.getCallerIdentity = ath.getCallerIdentityRequest
-
 	}
 
 	ath.config = config
diff --git a/auth/aws.go b/auth/aws.go
index 62c776b..7a04f1e 100644
--- a/auth/aws.go
+++ b/auth/aws.go
@@ -26,6 +26,6 @@ func (a *authorization) GetSTSHeaderAndBody() (string, string, error) {
 
 func (a *authorization) getCallerIdentityRequest() *request.Request {
 	r, _ := sts.New(a.sess).GetCallerIdentityRequest(nil)
-	r.Sign()
+	_ = r.Sign()
 	return r
 }
diff --git a/auth/aws_test.go b/auth/aws_test.go
index 1761a66..8050277 100644
--- a/auth/aws_test.go
+++ b/auth/aws_test.go
@@ -1,6 +1,7 @@
 package auth
 
 import (
+	"errors"
 	"io"
 	"net/http"
 	"reflect"
@@ -11,7 +12,6 @@ import (
 )
 
 func TestGetSTSHeaderAndBody(t *testing.T) {
-
 	testCases := []struct {
 		name              string
 		getCallerIdentity func() *request.Request
@@ -22,7 +22,8 @@ func TestGetSTSHeaderAndBody(t *testing.T) {
 		{"good Response", func() *request.Request {
 			return &request.Request{HTTPRequest: &http.Request{
 				Header: http.Header{},
-				Body:   io.NopCloser(strings.NewReader("Test data"))}}
+				Body:   io.NopCloser(strings.NewReader("Test data")),
+			}}
 		}, "e30=", "VGVzdCBkYXRh", nil},
 	}
 
@@ -32,7 +33,7 @@ func TestGetSTSHeaderAndBody(t *testing.T) {
 
 		header, body, err := ath.GetSTSHeaderAndBody()
 
-		if err != tt.expectedError {
+		if !errors.Is(err, tt.expectedError) {
 			t.Error("unexpected err", err)
 		}
 
@@ -43,7 +44,5 @@ func TestGetSTSHeaderAndBody(t *testing.T) {
 		if !reflect.DeepEqual(body, tt.expectedBody) {
 			t.Error("unexpected body", body)
 		}
-
 	}
-
 }
diff --git a/auth/azure.go b/auth/azure.go
index 69a6be2..e48ba65 100644
--- a/auth/azure.go
+++ b/auth/azure.go
@@ -21,6 +21,10 @@ const (
 	FederatedAzure = AuthType("azure")
 )
 
+var (
+	ErrInvalidToken = errors.New("received invalid bearer token")
+)
+
 // authTypeToGrantType maps authentication type to grant type which will be sent to DSV.
 var authTypeToGrantType = map[AuthType]string{
 	FederatedAzure: "azure",
@@ -44,7 +48,7 @@ func (a *authorization) BuildAzureParams() (*requestBody, error) {
 	qualifiedBearer := r.Header.Get("Authorization")
 	lenPrefix := len("Bearer ")
 	if len(qualifiedBearer) < lenPrefix {
-		return nil, errors.New("received invalid bearer token")
+		return nil, ErrInvalidToken
 	}
 	bearer := qualifiedBearer[lenPrefix:]
 
diff --git a/example/aws/auth_aws.go b/example/aws/auth_aws.go
index ae22936..b030a97 100644
--- a/example/aws/auth_aws.go
+++ b/example/aws/auth_aws.go
@@ -14,13 +14,11 @@ func main() {
 		Tenant:   os.Getenv("DSV_TENANT"),
 		Provider: auth.AWS,
 	})
-
 	if err != nil {
 		log.Fatalf("failed to configure vault: %v", err)
 	}
 
 	secret, err := dsv.Secret("your secret path")
-
 	if err != nil {
 		log.Fatalf("failed to fetch secret: %v", err)
 	}
diff --git a/example/client/client_auth.go b/example/client/client_auth.go
index cf5d9dd..e238989 100644
--- a/example/client/client_auth.go
+++ b/example/client/client_auth.go
@@ -17,13 +17,11 @@ func main() {
 		Tenant: os.Getenv("DSV_TENANT"),
 		TLD:    os.Getenv("DSV_TLD"),
 	})
-
 	if err != nil {
 		log.Fatalf("failed to configure vault: %v", err)
 	}
 
 	secret, err := dsv.Secret("your secret path")
-
 	if err != nil {
 		log.Fatalf("failed to fetch secret: %v", err)
 	}
diff --git a/vault/client_test.go b/vault/client_test.go
index 6aed600..c5626a3 100644
--- a/vault/client_test.go
+++ b/vault/client_test.go
@@ -1,4 +1,5 @@
 //go:build integration
+
 package vault
 
 import "testing"
@@ -9,7 +10,6 @@ func TestClient(t *testing.T) {
 	t.Run("TestNewClient", func(t *testing.T) {
 		client := &Client{clientResource: clientResource{RoleName: roleName}}
 		err := dsv.New(client)
-
 		if err != nil {
 			t.Errorf("calling clients.New(\"%s\"): %s", roleName, err)
 			return
@@ -23,7 +23,6 @@ func TestClient(t *testing.T) {
 	})
 	t.Run("TestGetClient", func(t *testing.T) {
 		client, err := dsv.Client(config.Credentials.ClientID)
-
 		if err != nil {
 			t.Errorf("calling clients.Client(\"%s\"): %s", ID, err)
 			return
@@ -36,7 +35,6 @@ func TestClient(t *testing.T) {
 	})
 	t.Run("TestDeleteClient", func(t *testing.T) {
 		client, err := dsv.Client(ID)
-
 		if err != nil {
 			t.Errorf("calling clients.Client(\"%s\"): %s", ID, err)
 			return
diff --git a/vault/role_test.go b/vault/role_test.go
index 5e633d8..d2b711c 100644
--- a/vault/role_test.go
+++ b/vault/role_test.go
@@ -1,4 +1,5 @@
 //go:build integration
+
 package vault
 
 import "testing"
@@ -8,7 +9,6 @@ const roleName = "test-role"
 // TestRole tests Role
 func TestRole(t *testing.T) {
 	role, err := dsv.Role(roleName)
-
 	if err != nil {
 		t.Errorf("calling roles.Role(\"%s\"): %s", roleName, err)
 		return
@@ -26,7 +26,7 @@ func TestNonexistentRole(t *testing.T) {
 	_, err := dsv.Role(roleName)
 
 	if err == nil {
-		t.Errorf("role '%s' exists but but it should not", roleName)
+		t.Errorf("role '%s' exists but it should not", roleName)
 		return
 	}
 }
diff --git a/vault/secret_test.go b/vault/secret_test.go
index 65145d2..a09360f 100644
--- a/vault/secret_test.go
+++ b/vault/secret_test.go
@@ -1,4 +1,5 @@
 //go:build integration
+
 package vault
 
 import (
@@ -19,7 +20,6 @@ func TestSecret(t *testing.T) {
 	defer cleanup()
 
 	secret, err := dsv.Secret(path)
-
 	if err != nil {
 		t.Fatalf("Secret for path=%s: %s", path, err)
 		return
diff --git a/vault/vault.go b/vault/vault.go
index a5e9790..30b0132 100644
--- a/vault/vault.go
+++ b/vault/vault.go
@@ -235,7 +235,7 @@ func (v Vault) getAccessToken() (string, error) {
 	}
 	ok := v.setCacheAccessToken(resp.AccessToken, resp.ExpiresIn)
 	if !ok {
-		return "", fmt.Errorf("unable to cache access token")
+		return "", errors.New("unable to cache access token")
 	}
 	return resp.AccessToken, nil
 }
diff --git a/vault/vault_test.go b/vault/vault_test.go
index 1c03151..fd1aa08 100644
--- a/vault/vault_test.go
+++ b/vault/vault_test.go
@@ -1,4 +1,5 @@
 //go:build integration
+
 package vault
 
 import (