diff --git a/README.md b/README.md
index c93a8de..a4f5683 100644
--- a/README.md
+++ b/README.md
@@ -82,6 +82,12 @@ print(df.get_files_in_folder(4))
 - set the volume of the module.
 - vol: Volume of the module. The range is 0 to 30. The DFPlayer doesn't remember these settings
 
+```volume_up()```
+- increase the volume by 1 up to the maximum of 30.
+
+```volume_down()```
+- decrease the volume by 1 down to the minimum of 1.
+
 ```get_volume()```
 - returns the current volume setting of the module or -1 on communication error
 
diff --git a/src/dfplayer/__init__.py b/src/dfplayer/__init__.py
index 5d5c465..0ff6f08 100644
--- a/src/dfplayer/__init__.py
+++ b/src/dfplayer/__init__.py
@@ -60,6 +60,12 @@ def play(self,folder,file):
         
     def volume(self,vol):
         self.send_cmd(6,0,vol)
+        
+    def volume_up(self):
+        self.send_cmd(4,0,0)
+
+    def volume_down(self):
+        self.send_cmd(5,0,0)
     
     def reset(self):
         self.send_cmd(12,0,1)