diff --git a/auth.go b/auth.go
index a62bba5..816f277 100644
--- a/auth.go
+++ b/auth.go
@@ -31,12 +31,6 @@ func GetCredentials(
 
 	if username == "" {
 		username = config.Username
-		if username == "" {
-			return nil, errors.New(
-				"Confluence username should be specified using -u " +
-					"flag or be stored in configuration file",
-			)
-		}
 	}
 
 	if password == "" {
diff --git a/main.go b/main.go
index dba8f3e..2a3fc84 100644
--- a/main.go
+++ b/main.go
@@ -39,7 +39,7 @@ type Flags struct {
 }
 
 const (
-	version = "7.0"
+	version = "7.1"
 	usage   = `mark - a tool for updating Atlassian Confluence pages from markdown.
 
 Docs: https://github.com/kovetskiy/mark
@@ -53,7 +53,9 @@ Usage:
 Options:
   -u <username>        Use specified username for updating Confluence page.
   -p <token>           Use specified token for updating Confluence page.
-                        Specify - as password to read password from stdin.
+                        Specify - as password to read password from stdin, or your Personal access token.
+                        Username is not mandatory if personal access token is provided.
+                        For more info please see: https://developer.atlassian.com/server/confluence/confluence-server-rest-api/#authentication.
   -l <url>             Edit specified Confluence page.
                         If -l is not specified, file should contain metadata (see
                         above).
diff --git a/pkg/confluence/api.go b/pkg/confluence/api.go
index 3dd7a1c..2930851 100644
--- a/pkg/confluence/api.go
+++ b/pkg/confluence/api.go
@@ -88,9 +88,18 @@ func (tracer *tracer) Printf(format string, args ...interface{}) {
 }
 
 func NewAPI(baseURL string, username string, password string) *API {
-	auth := &gopencils.BasicAuth{username, password}
-
+	var auth *gopencils.BasicAuth
+	if username != "" {
+		auth = &gopencils.BasicAuth{username, password}
+	}
 	rest := gopencils.Api(baseURL+"/rest/api", auth)
+	if username == "" {
+		if rest.Headers == nil {
+			rest.Headers = http.Header{}
+		}
+		rest.SetHeader("Authorization", fmt.Sprintf("Bearer %s", password))
+	}
+
 	json := gopencils.Api(
 		baseURL+"/rpc/json-rpc/confluenceservice-v2",
 		auth,
@@ -218,7 +227,11 @@ func (api *API) CreateAttachment(
 	)
 
 	resource.Payload = form.buffer
+	oldHeaders := resource.Headers.Clone()
 	resource.Headers = http.Header{}
+	if resource.Api.BasicAuth == nil {
+		resource.Headers.Set("Authorization", oldHeaders.Get("Authorization"))
+	}
 
 	resource.SetHeader("Content-Type", form.writer.FormDataContentType())
 	resource.SetHeader("X-Atlassian-Token", "no-check")
@@ -284,7 +297,11 @@ func (api *API) UpdateAttachment(
 	)
 
 	resource.Payload = form.buffer
+	oldHeaders := resource.Headers.Clone()
 	resource.Headers = http.Header{}
+	if resource.Api.BasicAuth == nil {
+		resource.Headers.Set("Authorization", oldHeaders.Get("Authorization"))
+	}
 
 	resource.SetHeader("Content-Type", form.writer.FormDataContentType())
 	resource.SetHeader("X-Atlassian-Token", "no-check")