diff --git a/platformio.ini b/platformio.ini
index 562b2e8..5a24d33 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -32,7 +32,7 @@ framework = arduino
 lib_deps = 
 	${env.lib_deps}
 	DIO2
-	arduino-libraries/Ethernet@^2.0.0
+	arduino-libraries/Ethernet@2.0.0
 
 [env:mega328]
 platform = atmelavr